...On Monday, GM announced the U.S. will get another all-EV plant. The company will spend $2.2 billion to convert its existing Detroit-Hamtramck plant to build only battery-electric vehicles. GM said that full employment at the plant is projected at 2,200 jobsâ€”up from just 900 at the plant today. ...What will those vehicles be? GM said Hamtramck will ultimately produce a "variety of all-electric trucks and SUVs." While the company didn't specify underlying platforms, the plant is being retooled for multiple vehicles built on GM's "BEV3" electric-vehicle architecture. Specifically, GM said one of the new EVs built in the plant will be an "electric pickup truck" scheduled to launch late in 2021. It added that the recently announced Cruise Origin self-driving shuttle vehicle will be built in Hamtramck "soon after" the EV pickup truck's debut. The electric pickup may be a GMC Hummer, turning the well-known but polarizing brand derived from military trucks into a model line under GM's luxury-truck label GMC. Little else is known about the truckâ€”and the rumored revival of Hummer could be wrongâ€”but watch for little bits of information to dribble out at regular intervals over the next 18 months. ...GM's announcement couches Hamtramck as the company's first all-EV plant. It certainly doesn't mention Tesla, and it also ignores another company whose own plant dedicated to electric vehicles will open around the same time as GM's. That would be Rivian, the quiet startup that spent nine years in stealth mode before debuting its full-size R1T electric pickup truck and R1S electric SUV in fall 2018. Rivian will soon announce how much the R1T and R1S will cost and claims that tens of thousands of people have put down deposits of $1,000 to get in line for its electric trucks, which are expected to be produced in the second half of next year. They will be built at the Normal, Illinois, assembly plant the electric-truck maker bought from Mitsubishi several years ago.