Years ago, when I ran motorcycle enduros (with ECEA), there was a gang of guys that used an old school-bus to haul all their dirt bikes around. Had maybe 20 bikes in it at a time. The bus had previously been used by a church.
The guys changed the lettering on the bus to read "Our Lady of Perpetual Mud". Pretty funny.

I've used my aluminum Chevy StepVan for the last 3+ years to haul my Spridget. I've traveled pretty far with this setup....including to Shannonville (from NJ). I used wooden ramps that are about 10' long. A Spridget or a real Mini will *just* fit in it: even a Spitfire is too wide for it.

But it's still a truck and not the most comfortable, so it's for sale. I'll be towing with a regular van and trailer next year (I just bought a new passenger van).

Here my setup: