Uh, this statement has a problem:
"Porritt doesn’t reveal much about the car itself, though we know it will be roughly 20 percent smaller than the Model S. The upcoming compact will also use cheaper materials, possibly swapping out aluminum for steel. “I expect there will be very little carry-over,” he says."
Aluminum is MORE costly than steel -- firstly, in raw material cost and, secondly, in manufacturing costs. Maybe someone left out an "...and..." between the words, like this "...materials, and possibly..."?
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