AWS DeepRacer offers an autonomous 1/18th scale race car driven by a reinforcement learning model, a cloud-based 3D racing simulator, and a global racing league. Over 85,000 developers have participated in the AWS DeepRacer virtual and in-person leagues, making AWS DeepRacer one of the most popular developer programs to ramp up on reinforcement learning. For all the thrills of racing, developers want to go beyond league racing and find new uses for the physical car. To enable developers to prototype robotics applications with the AWS DeepRacer hardware, we are open sourcing the device software running the car and offering 6 sample projects on the AWS DeepRacer Open Source page to get started.