I really don't know, I'll take a look at it tomorrow on my way to work. If it does have a hump then it does not bother me ... it will probably bother me now that you pointed it out; thanks!
I got the larger model, the GS-350 F-sport. It's a lot larger than my IS.
I leased it for 27 months so if I don't like I'll just give it back to them. IF I love the car at the end of the lease then maybe I'll buy it....I doubt that I'll buy it, I've been beating it up.