I have a cutoff switch on my PORSCHE so that during the winter storage I could disconnect the battery from the car electrical and just charge the battery on the maintainer, but you have to physically unscrew it to disconnect it.

I have strobe LED on all my bikes that you could probably keep in the glove compartment for such an emergency. When the Audi wagon crap out on us I made sure the wife and kids were out of the car, even though we were off to the side of the road.

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2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD