Things that happen in "The Little Rascals" and "Mr. Magoo" cartoons - CBS News: "Car backfire believed to have caused school lockdown."

I have to say: I've been driving for several decades and never in my life have I heard a car backfire.  I think it's an artifact from hand crank and carburetor days.  Yet it happens on TV with the same frequency as amnesia and getting trapped in an elevator with a pregnant woman.