Back in 1980 I used a device in which the front tire is held by a bracket and lines from from each handlebar end to the ends of the rear bumper of the vehicle. I removed the chain from the rear sprocket and took a 1961 BSA DBD34 from Homestead to Texas. No problem except when my wife decided to back up to get the car closer to the gas pump! I was amazed that I was able to pick up the rear of the bike while screaming at her to "stop" before she backed over my Goldstar!! If you do use one I suggest make certain it fits both the car and the bike and is well-made! Also a note taped to the dash saying "DO NOT BACK UP" in giant red letters may be appropriate!