Back when I lived in Minnesota I remember going to Brainerd for the CanAM. McLaren used to show up with two pick-up trucks and open trailers.
So, when I finished my homebuilt DSR in the early aughts i used to pull it on a homebuilt open trailer and I liked to park right next to the largest motorhome in the "wings and things" class. They were generally happy to share their electricity and unhappy when they weren't substantially faster than we were. We were hardly ever invited over for their steak BBQ on Saturday night.
Didn't stop us from attending, however.
Ah, nostalgia!
M