A high percentage of car crashes are caused by inattentiveness due to smartphone use. Taking that into con-sideration, the In-Traffic Reply app was conceived to take over replies of in-coming messages on behalf of users while they are in traffic. It automatically switches on as soon as they accelerate to a speed of 10 km/h. The replies sent contain short cartoons showing in a cheerful way what can happen when people text while driving. For that, ten different upbeat videos have been created. In doing so, the app significantly helps road users to remain focused on the road and stay safe – and social.