We’re not sure of the provenance of this video, other than the fact someone in America uploaded it to YouTube and is insistent that it hasn’t been mocked up or faked.

It is, however, well worth a watch if you need to wake yourself up. And a visceral reminder that if you’re carrying loads on a flat-bed or on your roof, make sure you’re not dropping them all over the road…Warning: this is probably not for those of a nervous disposition.

UPDATE: US site Jalopnik have tracked down the woman who took the video, 40-year-old Wendy Cobb from North Carolina.