If a nascar race is rained out does the ticket holder just lose the money spent on seeing the race?

Tomorrow is the nascar race in Fontana California, we are expecting a huge storm to hit saturday and sunday . we have tickets and I was wondering if the race is canceled did I spent hundreds of dollars and not get anything for it?

What side of a NASCAR will get aero lose when another NASCAR is too close?

Dose the car only get lose when the other NASCAR is on the inside, or drivers side.