Fellow on Vespa forum was riding along when his rear axle snapped, scooter bounced over the shed wheel, the wheel passed him and scoot dropped onto the brake backing plate - grinding it off nicely and bringing him to a nice safe stop.
Many pix of the snapped axle and many recommendations followed....until a new poster said, " I swear, .....if someone mentions JB Weld as a fix....!"
Stig