Mark me down as an unhappy camper

Was riding with friends in their car today and ended up stranded at the gas pumps and needed a tow. No problem, we have Good Sam.

didn't even know if we were covered while riding in our friend's car

Is anybody 'reading' what the OP posted?

He was NOT in his own car nor was he even driving another persons car.
He was just a 'passenger' in someone else's car!

I don't have a GS contract in front of me to read but I would find it hard to believe that ANY insurance company would consider this part of your coverage.

What on earth would make anyone think that your Good Sam ERS would cover another persons car? :S