There are over 30,000 injured and 3,500 dead on Ukrainian roads every year. Hundreds of people could have been saved if they would have just used seatbelts. However, Ukrainians just hate to buckle up. Something had to be done. There is one thing lots of Ukrainians hate even more: shanson. A genre of songs praising the criminal lifestyle, which is popular among taxi drivers but disliked among younger audiences. Bolt, a digital platform connecting drivers and passengers, performed a behavioural experiment stunt. With the help of a technical solution. An annoying shanson song, created especially for the project, played through the car audio and could be turned off only by the passengers fastening their seatbelts — with special microswitches installed in them. The microswitches were designed especially for the project and installed manually into every passenger seatbelt. This way the seatbelt saved passengers’ ears and lives at the same time.