Marc Lainez, Thibault Poncelet, and Loïc Vigneron, software engineers at Spin42, delve into their innovative project retrofitting a 2007 VW Polo with an Open Vehicle Control System using Elixir and Nerves. They share their journey of integrating modern tech into classic cars, emphasizing environmental sustainability and community engagement. The team discusses overcoming challenges like reverse engineering CAN messages, creating a vehicle management system, and the fun of collaborating on an open-source platform. Potential applications for their system range from boats to construction vehicles.