All the cars and trucks I have built for myself have always been constructed with the intention of being driven cross country (and most have made at least one 3000+ mile trip). That being said, I also have a 31 year old Harley that has been to Sturgis twice on the back of a trailer (you think there a stigma trailering to a car show, try it at a bike rally).

There are some cars out there that realistically would be hard pressed to make some of the trips that I have due to compression ratios, inadaquate cooling systems, extreme gear ratios etc. Other cars with extremely expensive paint jobs/plating etc are also good trailer candidates.

Of course there are the people who would rather show up with a perfectly clean car and not have to go through the prep that is associated with having driven the car.

I tend to agree with Bob, in a lot of cases it not the fact the car is trailered, but the personality of a few of the people invloved. But then again it takes all kinds.