I'm sure there would be people who would go for such a car. Unfortunately the profit would be questionable as I think too many folks these days expect a certain amount of creature comforts. The only concession I'd have in that type of car would be the addition of a minimal audio system, i.e. a cd/mp3 player with 4 speakers. Not crazy about vinyl seats either, but that's what WalMart has seat covers for, right?
Big Dave, I remember such a car in my family. Belonged to my grandfather then handed down to dad, then to me (was too far gone by the time I got it though). A 1981 Chevy Malibu Classic wagon. 229 CI V6 with dualjet carb, TH250 tranny, no AC, vinyl seats, AM radio, basic hubcaps, got 25 mpg on the highway and 19-20 in town. I miss the simplicity of such a car.
Aaron