Bond bug has two wheels at rear like reliant robin. Not like a Morgan 3 wheeler. Usually bright orange too.
Just looked it up. You are of course correct.
That is a completely different car to the one I was thinking of. But it wasn't the Morgan either.
The one I was thinking of has a curved front panel which opens up as a door.
Which looking up further was probably the Isetta (bubble car).
I'm no longer sure which my parents had - they may have had both at different times, but I was too young to remember them. I do remember them talking of the bond bug, but I have seen photos of the bubble car.