No longer the angry young woman, today she is an environmentally minded artist and has gone from being green with envy to simply being green. And for her latest video, she wants to take audiences along for the ride.

To that end, she has partnered with Mercedes-Benz, showcasing their E320 BlueTEC in her latest video, “Underneath.” The first single from her new album, Flavors of Entanglement, the video revolves around Morrissette and her concern for the environment. It shows her wearing a “Save the Earth” T-shirt at a Los Angeles bus stop and then distributing fliers about the environment – presumably on recycled paper.

Mercedes gets in the act when the E320 BlueTEC passes, and she salutes the driver for their environmentally aware choice. So what made the BlueTEC her eco-friendly car of choice?

First off, it uses a state-of-the-art engine and exhaust technology, which produces the cleanest diesels available. That allows the V6 to provide the power of a V8 with the fuel consumption of a four-cylinder compact. Neat trick, huh?

Beyond the immediate benefit of fuel efficiency, the long-term benefit includes significantly lower carbon dioxide emissions. The Benz E320 BlueTEC was impressive enough to be named the 2007 World Green Car by automotive journalists – and clearly that’s good enough for Alanis.

In case the sedan isn’t your style, this fall Mercedes will roll out a trio of SUVs – the ML320 BlueTEC, the larger GL320 BlueTEC and the less-easy-to-define-as-a-SUV R320 BlueTEC. So if you want to help Alanis save the planet, check out these cars. If not, don’t worry – I won’t say anything. We’ve all seen how she can be when she’s mad…