It really does come down to his seating preference - if he wants to buy the car he should take it for a couple drives and see if he can adjust the seating position to his liking.
We all have different preferences in how we like to sit while driving.
I'm almost 6'3" and when just commuting/cruising around town I like to have the seat leaned back a bit. If I'm out on a "spirited drive" with lots of curves and whatnot, I like to be a bit more forward and upright, closer to the steering wheel and windsheild. I never feel cramped in either position, but could see someone a bit taller getting pretty close to the roof in the upright position. The solution to this would be to get a model w/o the sunroof, you gain an inch or two (nordique had to do this as he is almost 7').
Even in "lounging" position, I still don't have the seat all the way back, I don't have my legs straight, rather I have the back of the seat bottom all the way down and the front nearly all the way up, so I'm kind of sitting in a "V" I guess. Not quite that extreme, but it is comfortable. TMI