I will ATTEMPT an extra terrestrial decoding of Big Al's commentary:
It is an American Bubble window as can be seen by its big headlamp shells.
As everyone knows, we Americans cannot help but put big V8s into everything that comes on to our shores, so-
Induction mods into the cabin could be causative mechanism for proposed implosion of Isetta body if the monster motor was modified highly enough to suck in the too frail body work.
606 is POP written upside down and backwards if you ignore the curl of the 6's- so may to a sufficiently dyslexic mind, seem to be a reasonable sound to emanate from a process which is the opposite of an explosion.
Al - Did I get any of this right? If so, it may be a bad sign. I wasn't previously dyslexic.
As I have alleged before, I think my brain has become demented from reading too many of your posts