25 of 50
BACKNEXT
Engineer runner-up: J.B. Straubel
CTO, Tesla

Straubel is on the forefront of electric vehicle development. Tesla founder Elon Musk in 2003 hired Straubel, 34, to help develop technology for Tesla's Roadster, the first limited-production high-performance electric sports car that accelerates from 0 to 60 in less than four seconds. Since then, the Roadster has sold out, Tesla has gone public, and the company is moving full steam ahead on developing the 2012 Model S, a four-door family sedan with a base price of $49,900 after a tax credit. "One of the most interesting dilemmas we'll face is the transition from a fossil-fuel-based system to a renewable-energy-based system," he says. "It's exciting to be at this tipping point, to explore solutions and map out a new transportation infrastructure." --J.P.M.

NEXT: Smartest Academic: Danah Boyd
Last updated July 09 2010: 1:19 PM ET
More Galleries
China: A nation on the move China is making big investments in roads, railways, and other infrastructure. More
Meet the new Microsoft Xbox Microsoft is making a bid to own the living room with its new entertainment device. More
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2013 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2013 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2013. All rights reserved. Most stock quote data provided by BATS.