A few weeks ago, we told you about Wired.com’s video contest, where you could submit a video telling them how you're using technology to minimize your carbon footprint for a chance to win a trip to Detroit to drive the Chevrolet Volt.

Now, Wired has announced three winners and needs your help selecting a fourth. Head over to their site where you can watch the video submissions of the ten finalists and vote on who you think should be the fourth and final winner. You have until June 7 to place your vote. Thanks to everybody who participated and check back in July for all the behind the scenes activities when the winners take their test drive.

Today I had the opportunity to award the winners for Year Two of the EcoCAR Challenge, a three-year engineering competition where we asked 16 university teams to design, develop and implement powertrains that minimize fuel consumption and emissions.  This is certainly not an easy task, and luckily, these students were eager to roll up their sleeves and dive into this complicated challenge.

Over the past two years, they’ve spent countless hours developing innovative technologies that were recently judged in more than a dozen technical events at the GM Desert Proving Ground in Yuma, Arizona and San Diego, California.  These tests are the very same ones that any GM launch vehicle would undergo.  GM believes in developing advanced powertrains that reduce dependency on petroleum, improve fuel economy and lower emissions - which is why the students could explore a variety of solutions including electric, hybrid, plug-in hybrid, and hydrogen fuel cells.