Three former SpaceX engineers — Beson Tsai, Brian Langone and James Wahawisan — are the founders of Stellar pizza, a startup that developed a robotic pizza assembly machine that, along with an oven, fits in the back of a truck. It takes the hands-off system five minutes to form the dough and apply the pizza toppings, customized by order. When running at full tilt, the system can roll out a fresh pizza every 45 seconds.