If you're unfamiliar with either MotoGP or Formula One, most people who know them well will tell you that they're comparable series, only one with two wheels, and one with four. And there are definitely comparisons to be drawn. Both series, after all, feature the current crop of the world's best trained and most talented racers, either on two wheels or four, racing prototype vehicles that cost ungodly amounts of money to develop to most of the rest of us.
So back in the day, the idea that Valentino Rossi, the nine-time MotoGP world champion, was testing with Ferrari and considering a possible future that involved Formula One, made a certain strange sort of sense. Not completely, of course; they might both be types of racing, but that's like saying you can switch from mountain bikes to competitive speed skating with little else than a change of gear.
But surely, it was easier to wrap your brain around than a migration to the World Rally Championship, wasn't it? And yet, that's something that Rossi was also considering in the early 2000s. Whether you are or aren't familiar with this particular twist in the tale, here's some video proof from the WRC Rally of Great Britain from 2002.