Elon Musk just dipped his toe into the fashion world -- via his car company, Tesla -- and the man might have a new career on his hands ... 'cause his new streetwear sold out. The Tesla CEO followed through with a promise he made on Twitter the other day after his company's Q2 profit figures outperformed Wall Street's expectations, sending Tesla stock soaring ... much to the chagrin of short sellers who were betting against EM and co. The guy said he was gonna roll out a line of Tesla short-shorts as a tongue-in-cheek slight at those same short sellers as well as the SEC (with which he's had beef and legal trouble ... (full story)