I brought home 3 pinball machines from Allentown in a 2013 Honda Odyssey. I slid in a 2003 Stern LOTR in through the trunk after removing all the seats and put it sideways by the front. I then put a disassembled 1986 Williams Pinbot on it's side and slid it in lengthways on it's side. I fit an assembled 1986 Williams Pinbot in through the trunk to make it 3 machines.
1 word of warning. Under no circumstances should you attempt to load/unload a pinball machine through the sliding doors. It looks like they will fit, but they won't and the attempt will likely cause an expensive repair bill for the power assist doors.
Before you leave on your trip, I would recommend cutting two, 4 foot" PVC pipes to use as rollers to get your machines into the back of the van without getting the machines damaged by the seat hooks.
I do not know for sure that you could get 3 in assembled, but I am confident you could if you took the head off of atleast one of them.
Good Luck!
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