Back when I drove cab, every so often someone would call, just to ask if we could jump-start their cars. Naturally, there were all manner of reasons the cab company had a "NO WAY" policy. Risk of damage to radios, etc. Now we're about to have the first really cold weather strike of this season. I'm thinking of carrying a separate battery and cables in the car. I figure the $5 cancellation fee plus $20 cash might be a good offer. Anyone here provide a starting service? What do you think of the idea?