I've driven a lot of weird and interesting cars but none quite that scary. It felt borderline out of control all the time and I was happy to return it to the owner with all the parts still attached.

The 'worst' mini I owned was a souped up Innocenti bored out to the max, it was still fairly safe to drive but I would not let non experienced mini drivers others drive it, too many surprise factors. We drove that thing through Scotland (my eldest and me) and it was a trip to remember.

Another interesting one - that I didn't drive but the son of the owner did - was a TR with a massive Ford special products V8 shoehorned into it. If you live in eastern Canada and you're overtaken by something small and wicked fast with 'BAD TR' as the license plate, that was it. Getting in the passenger seat of that thing was an interesting experience, the engine took up half the footwell, and the clutch had so little throw that you couldn't really tell when it was depressed and when it wasn't. It certainly moved though.