We are a 'bikes outside' family with two different solutions depending on the trip. For trips with just the family we just put the Co-Motion tandem on a regular receiver-mounted 4-bike rack and let the ends hang over on each side (just to the mirrors). Have driven thousands of miles this way. For larger trips (3 families, 9 people, 3 tandems, a TAB and some singles) we use the in-law's 1995 Buick Roadmaster wagon for all of the people and put all of the bikes and gear in an 8-foot long harbor-freight trailer (with side panels). We are very happy AND COMFORTABLE with both solutions! We just used the Roadmaster solution to get back to Pittsburgh from DC.