lol. are you trying to brag about the cars you can afford? (nice choices, by the way)
to answer your question, it will almost always cost more to insure two cars more than just one. the reason for this is because liability insurance is the most expensive (coverage for damage that you cause to other people and vehicles).
you can, however, get discounts for insuring your vehicles with the same company. in your example, it might cost you $1000/year to insure *ONLY* your 80k vehicle, but if you insure two of that exact same vehicle with the same company (two 80k cars under the same policy), you might only pay $800/year to insure each one.
it's kind of confusing to explain here, but this article has a good explanation -
Insure Multiple Vehicles On The Same Policy And Get Discounts
by the way, with the vehicles you are looking to insure, you better think twice about not getting collision coverage. those things can cost a mint to repair!