"Guaranteed crime magnet disaster!" is my reaction. Also, they are seasonal, require lots of acreage, and expensive to build. Even the poorest have big-screen TVs and cable.
There was one in Sumter. It died so long ago I no longer remember when the screen was torn down. The whole purpose of modern entertainment technology is to avoid having to share space with drunks, screaming brats, and losers who talk to the screen. A drive-in just adds drunk drivers and thugs. They went away for good reason.
The investment that would make Fat Cash is your idea for a coffee shop near Shaw. It needn't be a franchise, just clean and done with class. That's begging to make money, and unlike a restaurant, provides a universally popular product people like at all time of the day. Make that happen and you could afford a personal drive-in with beer and strippers if you like. It's been a great idea since you first floated it.
The Air Force runs on coffee, the Army runs on coffee, commuters run on coffee. Have a tiered, from exotic to affordable, selection of fresh coffees with good pastries etc. The markup is probably higher than crack.