When the detonation happened I was stunned. OMG, WTF, it sounded like someone had fired off a 12 gauge shotgun in the front seat of my truck. I could see a cloud of black smoke billowing up on the right side of my truck. The greyhounds had fled with clots of dirt flinging up behind them. Kate comes tearing out of the house, and the neighbors were fretfully peering out at the scene. Who'da thunk this could happen. I just sat there for a few seconds letting the ringing in my ears stop. This was the mother of all engine backfires.