I am 6'3ish and my dad is 6'9 without shoes on. Most cars are too tight for my comfort (I need a lot of legroom, plus I have size 15 feet, and a lot of cars don't have pedals set up for those of us who are ham-footed). My Mom's Monte Carlo is okay for me other than the accelerator pedal is touchy and hard to modulate for me, because of my big feet and its tiny size. My Saturn VUE has more than enough room (I actually have the seat up 2 clicks from being all of the way back), and it feels as if it were designed for me. I have a pair of Skechers boots and a pair of Louis Vuitton clogs that are particularly huge, even for my big feet, and they make it rather hard to press the clutch to the floor without having to contort my foot, however.
Our S500 has more than enough room for my father and I, and the pedals seem to be set up for those of us with huge feet, yet my mother who is petite (5'2 and 110 pounds) has no problem manhandling the beast around.
~D.J.~