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Old 02-07-2021, 01:26 PM
 
Location: Texas Hill Country
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How fast can electric cars go on the highway and are we in for a worse shock of time spent in travel than we were with the double nickel?
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Old 02-07-2021, 01:53 PM
 
Location: Fort Payne Alabama
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The bigger question is without fuel taxes how will we maintain those highways?
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Old 02-07-2021, 02:21 PM
 
Location: Tricity, PL
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Even with those taxes our roads are in a pitiful condition...not to even mention the bridges. Those taxes are just not enough to keep up with maintenance.
Gas taxes are largely used to fund infrastructure maintenance and new projects, but the amount of state and local road spending covered by gas taxes, tolls, user fees, and user taxes varies widely among states.
https://files.taxfoundation.org/2019...9-oct-f-01.png

Much more rewarding could be charging drivers per mile. I am sure they wouldn't like it, but it seems fair, no?

The mileage on electric cars is improving. They just need to be charged bit faster.
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Old 02-07-2021, 02:30 PM
 
Location: In the heights
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Quote:
Originally Posted by TamaraSavannah View Post
How fast can electric cars go on the highway and are we in for a worse shock of time spent in travel than we were with the double nickel?

There are highway speed limits in Texas and you're supposed to stay below the maximum speed limits. For Texas, the highest allowable speeds on any highway stretch is 80 mph, though I reckon you'll get away with it if you edge just a bit above provided you're otherwise driving safely and exhibiting control over the vehicle.

If you're asking how fast can electric cars get, then the record for top speed of an electric vehicle was an electric Corvette that topped out at 210.2 mph though that record is unlikely to last very long as the Rimac Two that's supposed to ship this year has a purported 258 mph top speed. For a mass production vehicle, or at least more mass production than Rimac, the top speed for a Porsche Taycan is 161 mph though that's likely to be beat pretty quickly. If you're thinking of vehicles under six figures, then the usual base trim online-order-able Tesla Model 3 SR+ is 140 mph while the Chevrolet Bolt's top speed is 93 mph and these are both about the median price of vehicles purchased in the US (though GM's been giving heavy discounts on the Bolt). Both of these speeds are probably a bit faster than most people drive on the highways.

If you do want to make the Austin to Houston trip a 6 hour trip, you definitely can. I recommend not taking the highways and taking it slow on purpose because that's dangerous to you and your fellow drivers. If you really want to take it slow, then consider taking local roads instead of highways.
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Old 02-07-2021, 02:37 PM
 
Location: Floribama
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EVs can go just as fast as any gas car, however range goes down the faster you go. The advertised EV range of most cars is based on about 50mph.
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Old 02-07-2021, 03:01 PM
 
Location: Vermont
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Originally Posted by TamaraSavannah View Post
How fast can electric cars go on the highway and are we in for a worse shock of time spent in travel than we were with the double nickel?
The new Tesla Model S will do 0-60 in 1.9 seconds, max speed is 200mph, and can travel 520 miles on a charge.

Let's see, that's 166 miles. Looks like a Model S could make the trip (assuming we're ignoring legal issues) in just under 50 minutes. I have doubts as to whether it could make 166 miles on a charge at 200mph (could probably do it easily at 150), but at that speed you're not getting very far even in a gas burner.
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Old 02-07-2021, 03:49 PM
 
Location: Texas Hill Country
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Okay, here's are the points I know.

With a Cold War diesel-electric submarine, one can run at top speed and drain their battery in an hour or they can run on a knot and keep under for two weeks.

Are electric cars in, if you will forgive the pun, in the same boat?

Are we looking at not being able to do 65 mph anymore for 4-6 hours on end, assuming the highways are perfect?
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Old 02-07-2021, 03:56 PM
 
Location: In the heights
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Originally Posted by TamaraSavannah View Post
Okay, here's are the points I know.

With a Cold War diesel-electric submarine, one can run at top speed and drain their battery in an hour or they can run on a knot and keep under for two weeks.

Are electric cars in, if you will forgive the pun, in the same boat?

Are we looking at not being able to do 65 mph anymore for 4-6 hours on end, assuming the highways are perfect?

For new EVs right now? At 65 mph, 4 should be reachable by most (that's 256 miles which is about the median range for new EVs right now), 6 will probably entail charging at some point save for maybe the Model S Long Range. That being said, Austin to Houston is only 166 miles, so you should be able to cover that easily in the vast majority of EVs. If you're thinking 6 hours of 65 mph nonstop, then I think it'll be a few years before EVs at US median new vehicle purchase price price have that range on one charge.
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Old 02-07-2021, 04:05 PM
 
Location: Texas Hill Country
23,652 posts, read 14,019,839 times
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Quote:
Originally Posted by OyCrumbler View Post
For new EVs right now? At 65 mph, 4 should be reachable by most (that's 256 miles which is about the median range for new EVs right now), 6 will probably entail charging at some point save for maybe the Model S Long Range. That being said, Austin to Houston is only 166 miles, so you should be able to cover that easily in the vast majority of EVs. If you're thinking 6 hours of 65 mph nonstop, then I think it'll be a few years before EVs at US median new vehicle purchase price price have that range on one charge.
Okay, next question, making it a round trip. What's the recharge time for say 3 hours there, loiter around town, 3 hours back?

Three hours is the standard drive time because there is no IH from Austin to Houston. It is either US 290 or intersecting IH 10 out of San Antonio at some point.

Next question is that 65 is a decent speed but IH 10 can be posted 75 in locations. Is there a speed for electric cars where there is a serious fall off of efficiency, of range?
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Old 02-07-2021, 04:15 PM
 
Location: Vermont
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Quote:
Originally Posted by TamaraSavannah View Post
Okay, next question, making it a round trip. What's the recharge time for say 3 hours there, loiter around town, 3 hours back?

Three hours is the standard drive time because there is no IH from Austin to Houston. It is either US 290 or intersecting IH 10 out of San Antonio at some point.

Next question is that 65 is a decent speed but IH 10 can be posted 75 in locations. Is there a speed for electric cars where there is a serious fall off of efficiency, of range?
Tesla's latest superchargers charge at a rate of ~15 miles per minute. To recoup the 166 miles between the two cities, you'd need to charge for 11 minutes. Some of their vehicles would not need to recharge even for a round trip, however.

As speed increases, range drops, similar to an ICE. It's actually less steep with many EVs because they're more aerodynamic. With a modern long range EV, you can easily drive speeds where you can lose your license and still make it between cities with battery to spare.
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