That's right, there's an open source car in the world called "c,mm,n" (pronounced "common"), and it's just been shown at the AutoRAI show in Amsteen.
So why is c,mm,m open source? It turns out that you can get the full technical specifications of the car, the pictures, the design, you can make any modifications to the car, and you have to share the changes with the community.
The c,mm,n is also an environmentally friendly family car, with a hydrogen engine and an advanced navigation system to assist with transportation and parking.