Wouldn't that be nice!
In NHRA drag racing, and all the tracks that I have raced at, it is a Sucks to be you deal. If two cars tangle during the run. There is no implied responsibility for either driver to pay for the others, that is the waver you sign at the gate, although I would hope that some stand up fellas do on a very rare occasion help pay if they feel they are at fault.
PS: I have not heard of anyone yet that has actually paid for someone else's car that they crashed into, but hope there are some out there that might.
Bruce