Does it take rocket science to measure the length of your car(s) with a measuring tape and see if it comes in under the length of the "useable space" of the trailer?
Seriously... a little common sense goes a long way.
And personally, I would spend the extra 25 bucks and rent the enclosed trailer:
http://www.socalrvrentals.net/Vehicl...20trailer.aspx
You have no idea how nice it is to be able to hid out if it rains, etc.