[icanhackit]

You're joking but interestingly Tesla at the Battery Day presentation revealed a giant injection mould to make the aluminium chassis for one of their cars, which will simplify the manufacturing process.

So we're going into uni-body territory but with a faster, simpler process than milling/printing. If Apple is happy buying thousands of milling machines for laptops and phones, a chassis injection mould might be the process they'd need to break into the car space.