doublez: Here are some pics of a local Cavalier (not z24). It was only a 2.2L 4 cyl plain jane cavalier until one guy turned it in to the J-body Batmobile. You can find this cavalier on the streets of Halifax, Nova Scotia Canada.
I think all of the pics speak for themselves.
So this is what Batman would drive if he wasn't a billionaire.
#3, Robin wouldn't drive something as manly as this. I could probably outrun the car on foot, but at least it's balck and red. Robin would probably drive a green and pink car. And it would have to be something smaller. Maybe a Geo Metro.