Dave was chosen by Channel 4 to help one of its campaigners, teenager Zander Percival, who is trying to have a law passed that will ban smoking in cars carrying under-16s. The 'You smoke I choke' film was designed from a child's perspective, with illustrations, animation and soundtrack. Dave created the viral in-house on a low budget. It was then e-mailed to MPs and other influential figures who could help change the law.