Dude lambos would be great going to the mountains, they have the same AWD systems as Audi (because audi owns lambo) so he is set there.
Also its really dumb dumb to take a $400,000 (or however much it is) car to the mountains, with out snow tires on it, and Jon is a smart guy, and a good driver, have you seen his track car? Its the same as what some companies use in the 24 hour Le mons racing, and since he's so smart and such a good driver, the ski racks are not gonna be an issue, because he is never going to be able to go over 100 MPH (which is about the speed to when the racks would be an issue) on every day roads, its not an issue, and when he does want to go fast, its not like its a huge pain in the ass to take racks off, maybe 20 minutes are your set.
He has a lambo for the same reason anyone would buy a lambo, ITS A LAMBO!!!
Anyone in their right mind who want a car for the track or to race around with, a Lamborghini would be their last choice.
Lamborghini's are EXTREMELY heavy, (the SV not so much, but there is better choices out there)
Jon bought a lambo because there are crazy fun, and very eye catching, much like him (when he's skiing, so no homo) its a car that in my opinion, matches his personality, and his pro model skis, an eyecatching car, that when it wants to, can be completly INSANE, but also a quiet crusier for when you just want to move around.
But then you have your opinion, im just trying to tell you why Jon would want this.
But i have a question for you, if he should bother getting lamborghini's, what car do you think he should have? A 4X4 with huge tires and a big lift kit? or something else?