I have never "broken down", or even had a flat on the side of the road... except for changing 1 boat trailer tire ... decades ago.
I have a Carrera with 930 brakes .... how would THAT work for a rear flat ...
I roll with a DME relay, factory tool-kit, spare (old) belt.... no spare, and no intention of ever doing a swap on the roadside....
They call me... Lucky Stoopid !
At least I have a cell phone now.... the luck might run out.... but stoopid never does