My 3 wheeler experience was with a 300cc Isetta named "Freda Blob"
Freda, like Mikes car, got me out of the rain & off motorbikes.
Great fun to drive except when a corner was taken faster than she wanted to.
When an Isetta lifts up on just 2 wheels an unexpected & rapid change of direction happens.
Fortunately this makes the car plant itself firmly back on all 3 wheels, albeit somewhere other than where you were planning to be.
Freda revved well & went faster than her designers planned her to but the distress caused by the subsequent vibrations sometimes prompted her to divest herself of her carburettor.
I chose to ignore a persistent engine oil leak & one Winter's night whilst she was taking me up a longish climb in the Mendip hills the lack of oil caused a major piston seizure.
This resulted in the cylinder parting company with the rest of the engine only to come thumping back down onto the crankcase. The piston decided to give up the fight when it hit the side of the resulting hole in the crankcase & it left the scene of the crime.
When this all happened the whole of the back of the car gave a sudden jolt skywards & it came to a sudden silent halt in the darkness. I quickly climbed out of Freda to see what had happened when I heard the tinkling sound of metal on tarmac.
The moonlight illuminated a piston, gudgeon pin, two pushrods & two pushrod tubes rolling down said hill..
I managed to collect all of the bits, even though they were scolding hot.
Friends gave me a lift to the pub where new year's eve was seen in & the problem of a broken Freda was forgotten until the next day.
Replacement 2nd hand Isetta engines were cheat to buy back then; thank goodness!
Oh to be young again