Re: Cars in Batman Forever
I don't think they really paying much attention to the style of cars in the Burton movies. They were just plain, nondescript cars. It didn't really come off like a stylistic choice. I honestly couldn't tell you what year they were designed in while there's something about cars from the 50s and earlier that have a totally different design philosophy compared to cars from the 70s and 80s which were relatively more modern looking in 89 and 92. A lot of people were still driving their 10-20 year old clunkers whereas you mostly see cars like the ones in Batman Forever at a car show.
Superman with realistic physics isn't Superman.