If I were ever unfortunate/careless enough to get into a similar situation, the last thing I would do is jump out of the car!

Ah yes, the great British winter!

Spend an hour clearing the snow from the front door, twenty minutes de-icing the locks, pour sixteen kettles of water over the windscreen and finally call out the AA to get enough juice to turn over an engine with a sump full of lard...

...then once all is well, drive around as if it's Summer's day...

I have to admit, the subsequent de-camp from the moving vehicle by both passenger and driver takes the concept of "shouldn't be behind the wheel of anything larger and more dangerous than a shopping trolley" to a completely new level!