Swedish agency Animal came up with an impressive way of drumming up publicity for Reebok's new running shoes: it set up an outdoor billboard in central Stockholm, challenging people to a human speed test. Anyone who ran past the billboard faster than 17 km/h, unlocked a brand new pair of ZPump 2.0 shoes.

The billboard used a speed camera developed specifically for this campaign, which used realtime object recognition and motion detection to identify runner's movements and calculate their pace, to great effect.