Elon Musk promised a surprise during the Tesla semi unveiling event, and boy did he deliver: the return of the Roadster. But it's no repeat performance. The stunning four-seater roadster boasts jaw-dropping numbers, that if they measure up to Musk's claims, will make it the world's fastest production car. In his remarks, Musk described it as a "smackdown" to the fossil fuel-addicted auto industry. 

The finale to his semi truck reveal was all about driving home that point. As the opening guitar licks of the Beastie Boys' "Sabotage" blasted over the loud speaker, a beam of red zipped across the parking lot. The second-generation Tesla Roadster came to an abrupt halt, and a grinning Elon Musk came back on the mic to introduce his latest baby, which will likely cause Porsche and Ferrari to break a sweat.