If you do not find one, U-haul rents trailers and inside there is tie downs that maybe would work for you.
Also most bikes can fit in a pick up truck getting the bike up can be tricky but do able(i recomend at least 2 ppl(so one can hold the bike in place as the other climbs into the box...)
Not sure what people recomend to use for ramps though...sure some buddie has ramps for his quads that would work.