Elon Musk, CEO of electric carmaker Tesla and aerospace startup SpaceX, revealed that the newly launched electric Cybertruck is made of the same alloy which will be used in SpaceX's Starship rocket. "It's literally bulletproof to a nine-millimetre handgun," Musk added. The billionaire has also tweeted that a pressurised edition of Cybertruck will be the "official truck of Mars".