Which models have a titanium skid plate? Model 3s have a "skid plate" made out of cardboard. A quick search doesn't reveal what other models use. And, frankly,

Which models have a titanium skid plate? Model 3s have a "skid plate" made out of cardboard. A quick search doesn't reveal what other models use. And, frankly, I ask partially because a titanium skid plate would be ungodly expensive for my motorcycle, let alone something big enough to cover a Tesla battery pack.