[Dirty Harry]

I've thought about mounting a propane tank in the trunk and running a line to each sidepipe, with a nozzle near each outlet. Then mount a spark igniter near each nozzle. Put a solenoid on the throttle linkage so that, when the throttle goes wide open, the gas flows and the igniter sparks. The resulting blue flame would shoot several feet out of the sidepipe, propelled by the exhaust blast. Great photo opportunity, especially at night.
Oh, and the studded snow tires, too.