I have a Thule Speedway 2 bike rack. It's very light, easy to adjust, and holds the bicycles very well. I definitely would trust it for a long trip on the highway. As far as marring up the car is concerned, that is a risk with any trunk mounted rack. I think using a clear plastic film, such as 3M Scotchgard™ Paint Protection Film, where the straps attach to the body panels is a good idea.