When you think you are fast ...

... and then Valentino Rossi passes you like a boss.

Aprilia race track Valentino Rossi

An incredible video has emerged of a YouTuber going flat out on an Aprilia RSV4 RF on track, before being made to look like he's going backwards - seemingly by the GOAT himself, Valentino Rossi.

The clip was taken before the season at Magny cours GP track by YouTuber Sebastian Vittel in wet and cold conditions, and has already had over half a million views.

Sebastian says: 'As you can see I'll need A LOT of work to be fast with bike on the track.'

We think he's being a bit harsh on himself there - VR46 would make almost anyone look pedestrian.

Can it really be Rossi? Have a watch and see what you think.

Whoever it is they're rapid!