[Christ]

Find a threaded fitting that will thread into a spark plug hole, and a pressure relief valve that you can set to whatever your tire pressure is (pressure regulator works fine). You set it up, remove a spark plug and remove the engine's ability to start (disconnect coil, remove ECM fuse, etc.) thread the fitting into the spark plug hole and crank till the pressure relief blows. When that's done, you remove your fitting and such, set the engine up to run again, and drive to a service center or wherever you can fix your tire (if you haven't already done so).