Can see where your going with that,,, how about getting fans involved, letting them be in charge of the power and, make it so that it can be all put away in the box and travel round, might beat some planning laws there... It would be a bit like a Circus, which it isn't at the minute.
Good idea,,, get a recording of every rider and, when their racing use their sound,,, yes 4 at once !!!
it might need a wizz on the decks to do it tho, which might be a problem
You might even get some ningningnings