On June 2nd, I am moving to Minnesota to work for Old Dutch Potato Chips. Here's my problem, I want to trailer my 67 convertible so I rented a Uhaul one way auto transport. I have a 2001 Tahoe with the towing package. Can I go faster than the 45mph posted limit? Can/should I put a cover on my car while being trailered? I'm driving from Seattle. Thanks for your help.