A few months back I saw someone had listed a partially built one on Ebay...main body and rear fins and motor section completed. It was so large that it was sitting on a one of those radial flyer wagons and you almost couldn't see the wagon anymore! Might have been a 10-12" main body tube! I think it also had one main center motor mount and two smaller mounts above and below. :eyepop:
It was local pick up only, so I didn't even give it thought...well, maybe a bit to see how insane it would've been to drive that far.

I'll tell you though...if it was even
remotely within reasonable driving distance I would've been on it.