In a hypothetical scenario a terrorist adulterates the gasoline in the city where you reside. Your car still runs on the gasoline but problems with your car begin to appear.
Your car idles roughly, shifts poorly, gets less gas mileage, and doesn’t start as well. These problems get slightly worse over time. You visit your mechanic regularly who fixes parts (pistons, fuel pump, gas line), replaces parts (gaskets, manifold, filters), gives you advice on driving your car a little more conservatively (slower starts from a dead stop, warm it up more), recommends a fuel additive, and tunes it up more often. You are dismayed because the car doesn’t have that many miles on it, nor is it that old. However, all your neighbors and co-workers cars are running no better, so you think nothing of it. No one ever suspects the gasoline might be the problem.
Then one day your car just up and dies. You go off to the car dealership and purchase another automobile. Unlike automobiles, though, you won’t be able to purchase another one of you.