There is really no less body or leg room than you'd have in a normal booth seat. The table area is more like eating at a narrow counter, but it's not really uncomfortable.
If you really don't like the "normal" cars, there are several which are set up a bit differently...the car is kind of hollowed out and a table and chairs is fit inside it.
I'm 6'2" or 6'3", about 200 lbs and I manage okay. The booth space isn't the issue in the cars, it's the depth of the counter for your plates, cups, and silverware that is the challenge.