So, what can I shoehorn into a Fiat 124?

back in my younger days there was this event called "plaggencross"
the idea was much like a circle track demo derbi but it took place on a cornfield, after the harvest but before it got plowed so all the stubs of the corn would still be there

there was one team from Belgium that ran an old 2CV or beetle or something like that where each rear wheel was independently powered by a single hayabusa engine ;)