I highly recommend you join a Mercedes forum, (mbworld, benzworld, etc...) From what I have read there, do not floor your car from a dig at the track. Roll onto the throttle according to the grip you are getting. At the track make sure you get a nice burnout in to warm up the rear tires for...
If you're getting it straight from AT&T (assuming you have AT&T), you're most likely going to be SOL. The new MF3 firmware they released has totally locked down the phone. At this point the only thing you can do on it is root it. No custom roms, no unlocking the bootloader.
you may be right, but at the price i'm getting it, and the fact that I've grown up around Benzes I think this is a worthwhile investment. Plus having some hookups at Benz dealers/mechanic shops doesn't hurt either.