Imagine: you are a 21-year old student, you join a team of ambitious engineers, you develop world’s first solar powered family car 'Stella', you win the most prestigious awards in the world, and then... everybody parts ways.

In the documentary 'Driven by Challenges' Liselotte Graas reunites with her former Stella colleagues. In the second episode Liselotte visits Arjo, who is one of the co-founders and CTO of the groundbreaking scale-up Lightyear.