Actually I am very comfortable in the Supra, probably evn more comfortable than many larger cars. I don't NEED to use the quick release but it does make it a bit easier to get in and out.
I've driven my 89T to Vegas and back 9 times for the annual SILV events - only missed the most recent one because I had too much stuff to haul and had to drive an SUV. Each year the drive to Vegas and back is relaxing and comfortable. Even after 13 hours of driving with breaks every four-ish hours I was still relaxed and comfortable. I can tell you that driving the Trailblazer down this past year I did not feel as relaxed and comfortable at the end of the drive - I WAS ACHY AND SORE!
Yes, even at 6'4"ish and somewhere between 250 and 270lbs the Supra is the most comfortable car I own and likely the most comfortable car I've ever driven. It is even more comfortable than my Solara convertible.