https://techcrunch.com/2019/11/22/teslas-cybertruck-is-made-of-the-same-stainless-steel-alloy-that-spacex-is-using-for-starship/

Tesla CEO Elon Musk unveiled the much-anticipated Cybertruck electric pickup in LA on Thursday, and the vehicle is obviously getting a lot of attention for its eye-catching and unique design. It looks more like a rover designed for space exploration than a truck – and analogy in this case is particularly fitting, because the Cybertruck is clad in the same stainless steel alloy that Musk’s other company SpaceX will use as the skin of its forthcoming Starship spaceship.

“It is, it is literally bulletproof to a nine millimeter handgun,” Musk said on stage during the unveiling. “That’s how strong the skin is – it’s ultra-hard, cold-rolled stainless steel alloy that we’ve developed. We’re going to be using the same alloy in the Starship rocket, and in the Cybertruck.”