I wonder if this is a British thing? While Hoover is (or at least was) a very large and well-known vacuum cleaner brand in the states, I don't know anyone who says "hoover" to mean "vacuum cleaner." But I have heard it on British TV shows. (That and "Bic" to mean ball-point pen, apparently. Bic is mostly known for making extremely low quality razors in the US.)

I don't know anyone who literally means "Google" when they say to google something, though. They just generally mean search.