Beat on a go-cart track,,,,wow! Perhaps that is were they should stay. Not very practical, for an adult, on the road. Sort of like a match box car. LOL Funny but at 6'4" I find there is loads of room in a Mini and I've had three other people of the same size in it and it there was more room than in a Bini!
Plus when some smart ar#* locks you in a car park for coming back five minutes too late the four of you can lift it over the low wall around the car park. (apart from a few scratches on the underside and a dent in the exhaust there were no problems)