Teats on a Bull

Abby Sciuto: The fuel line to the gas tank cap was ruptured here. Torn by a loose belt on the differential housing.
Special Agent Leroy Jethro Gibb: Loosened how
Abby: Unknown. The van also had a short in the electrical system. Coincidentally in the taillight right by our ruptured fuel line.
Gibbs: You know how I feel about coincidences, Abs.
Abby: Equatorial pygmies know how you feel about coincidences, Gibbs. So one would wonder… accident or not an accident? That is the question. Our first player… an innocent differential housing bolt that is rubbing and straining on the molecular bonds of our vulcanized fuel line. Until, after eons, our hapless hose finally ruptures. The gas moves quickly into the floorboard of the van when it’s in motion. The driver smells it… what could it be? He hits the brakes, and the short in the taillight ignites the pooling gas vapors! The flames quickly super-heat the onboard oh-two and when the canisters can no longer contain the growing pressure… KABOOM!
Gibbs: Not an accident.
Abby: Not unless the Angel of Death is going through a Rube Goldberg stage.