Earlier this month, we covered Cycling Canada's promotional film that  encouraged people to get on bikes by showing bicycles pedalling along the road, apparently with no human input. Now, a behind the scenes video shows how they did it.

The short film, directed by Mark Zibert, runs the gamut of cycling, from road racing to mountain biking, track and BMX, plus a handcycle.

There’s an eerie poignancy about it – it’s strange to see a crash, for example, where there are no riders involved, and riderless footage including trackstanding at a velodrome and bikes jumping out of a BMX starting ramp is also striking.

Launched earlier this month, the ‘Hop On, Canada,’ campaign has been developed by Innocean Worldwide Canada Inc.

Since featuring the clip in our video round-up earlier this month, we''ve been wondering how it was done, and now Innoceanhave produced a video showing the background.