I think you are living in a bygone age Steve, minimum requirements for a breakdown on a modern motor car is a lap top, a crying shame I know but that's progress (is it?) secondly in the event of a breakdown on a motorway, be it only a puncture, get out and stay out of your vehicle, summons the rescue services, and wait at a safe distance, i.e. on the grass bank for there arrival, let them do the risk assessment as to whether or not it is safe to work on your vehicle. Our motorways are far to busy to try to attempt a repair your self, it is quite common to witness cars, Lorries, etc wandering on to the hard shoulder, don't risk life and limb for a breakdown, cars can be replaced life cant.
Allan & Gill.
Allan & Gill.