A couple months ago I had a tire fail, ripped the side wall from the bead, 5 miles from home. I made the call.
But my wife was nowhere near the car, and busy at the time anyway, couldn't help me for at least an hour. I patched my inner tube and wrapped it loosely in crisp new $20 bills (i don't usually carry much cash, but I'd just been to the bank!) and put the tire back together. I was able to ride home after all.
How big a gash are we talking about that can be fixed with bill, even if temporarily?