I honestly have no idea what car I would take. From a PT standpoint probably a vert version of mule. Need something that will comfortably sit at 150mph for long distances, and would want it to run up on 200ish.
Viper would be fun, as would a ferrari 360/430 spyder. I could listen to a 360 at 6k rpm for days on end and never need a stereo.
If I could take ANY car, i'd roll that cadillac sixteen. It would be epic to do the gumball in a 20ft luxo yacht with a million hp and more displacement than the entire honday assembly line.
This car is money