"the car was going to be called the Model E, until Ford said it already had that name trademarked" (...) "We'll have three bars to represent it and it'll be S I

"the car was going to be called the Model E, until Ford said it already had that name trademarked" (...) "We'll have three bars to represent it and it'll be S III X!" 3 also happens to be the '1337' slang variant of E.