Undertaking / filtering on left?

Car drifts over your way - you either slam on the brakes , risking causing a collision from behind, crash into the car (who's gonna win that one?), crash into the kerb and come off or think fast and hop up the kerb.

So you'd rather get knocked off?

Escaping a dangerous situation by hopping onto the pavement and and riding on the pavement are two different things.