I test drove the S yesterday. Fell in love with the driving experience, but hated the front seat. I'm 6'3"; had plenty of leg room and just (barely) enough head room, but the lack of an adjustable headrest is a major problem and a deal breaker for me. The lump at the base of the fixed headrest stuck out right in between my shoulder blades, which made for a very uncomfortable ride. And the top of the head rest only came up to the top of my neck, not the top of my head -- which makes for a potentially dangerous situation in event of a crash. Has anyone else out there run into this problem? If so, do you have any suggestions for a fix? Thanks.