Tesla Motors' CEO Elon Musk plans to build a battery-electric pickup truck, heavy-duty truck, and a bus that would turn the driver into a "fleet manager," according to his Master Plan, Part Deux released July 20.

Musk's plan has been met with equal parts excitement and skepticism, since the four-pronged multiyear strategy comes while he's still ramping up production of the more affordable Model 3 that's expected to democratize his luxury vehicles.

In the master plan, Musk also promised updates to his semi-autonomous Autopilot technology and said he will launch a ride-sharing program to compete with Uber.

Musk is calling his heavy-duty truck the Tesla Semi and claims it will "deliver a substantial reduction in the cost of cargo transport, while increasing safety and making it really fun to operate."

Read the full master plan here.