Not sure where you are getting 4500 at...its actually 2000. Not a good tow vehicle for anything...A followup question...
I'm considering getting a Buick Enclave, well, ok, the wife is. Tow rating is 4500lb, so no matter how you slice it, a towing setup would be pretty close to the limit of the vehicle (trailer + elise + passenger + xtra set of tires/wheels + tools > 3500lbs). If I don't use an ultra-lite trailer, than I'll definitely be close or at the limit.