Deus Ex Mechanica?
"So what's this item on my repair bill?"
"Well, we were making a diagnostic to figure out what was wrong, so we reversed the polarity on the deflector dish that caused a subspace rift, destroying the shop. One guy managed to get sucked into a time vortex, though, met a civilization of time travellers, got sent back in time to the point before the rift occured, and set things right again. He caught the attention of God, who dropped by and fixed the car for no good reason at all... It was pretty convenient, actually."