Tesla Inc is developing a long-haul, electric semi-truck that can drive itself and move in “platoons” that automatically follow a lead vehicle, and is getting closer to testing a prototype, according to an email discussion of potential road tests between the car company and the Nevada Department of Motor Vehicles (DMV), seen by Reuters.

Meanwhile, California officials are meeting with Tesla on Wednesday “to talk about Tesla’s efforts with autonomous trucks,” state DMV spokeswoman Jessica Gonzalez told Reuters.