You don't want to put diesel in a gas engine. It's actually a major problem for your car, especially if you start the engine.

My family has both a gasoline car and a diesel van, so sometimes, I accidentally drive up to the wrong pump. Luckily, I’ve always realized my mistake before reaching for the wrong nozzle, but I can ...

Heed the advice on the cover of the Hitchhiker's Guide to the Galaxy and don't panic, at least not yet. Or, maybe just panic a little on the inside, but maintain your calm demeanor on the outside.