How well do you know the next big thing from the BS?
Think you can sort the ridiculous ideas some of the world's biggest companies have come up with to try and fool us on 1 April from the real-life concepts which are "serious" business propositions?
There's a fine line between crazy and the next billion-dollar idea. There are also some April Fools' hoaxes that have everyone going because they bring just the right amount of believability to it.
Take City A.M.'s quiz to see just how good you are at spotting the hoax from the hot concept.