She wants to drive cross country with a trailer that will be empty 90% of the time?  I wouldn't recommend that. 
 
But, a good truck for this would probably be a compact Toyota Tacoma 4x4.  If she didn't want to drag along a trailer, I'd suggest a full size vehicle that would fit the bike in it, with ramps, so that she doesn't need to drag a trailer along.
		 
		
		
		
		
		
		
			
				__________________ 
				While a standard engine is powered by a belt connected to the crankshaft, a turbo engine runs on its own exhaust steam, making it more energy efficient. -- CNN
			 
		
		
		
		
	 |