Originally Posted by wstar

Edit: removed what I said here, in light of semtex's simul-post above

To me the cruise control thing is a pretty key feature too, although maybe it isn't for everyone. Being able to swap out 5 different maps instantly from the steering wheel is nice (think of the uses aside from your standard "aggressive tune for premium pump gas": 1 or more different race gas tunes for what's available at tracks you frequent, a valet mode tune, a fuel efficient / mild tune, etc).