Yep, RV is the ticket although there are some hoops to jump through depending on what state you are in. The box expands only when not moving. It takes it from 8' to 14' wide x 17' deep. The M109 is the hot ticket though. Anyone interested should check out the M109A3 vs the M109A4. Both are awesome, but for different reasons. The A3 is a multifueler and manual trans - simple tech and easy to work on. The A4 has a newer CAT diesel, auto trans (wife-friendly?), split brake system, CITS - more comforts and more to work on.