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Diane Kruger

Courtesy of Michael Simon/startraksphoto.com

In honor of Earth Day, these stars prove that you can save the planet and ride in style at the same time!

Adorable Unknown actress Diane Kruger takes a quick break to give her Mercedes-Benz electric car some TLC and a nice wash in Los Angeles.

Environmentalist Leonardo DiCaprio doesn't need a gas-guzzler to keep up his movie star persona. The Oscar nominee still looks hot in his silver Fisker Karma sports car.

And when it comes to going green, Hollywood A-listers demonstrate that you can't go wrong with an eco-friendly Toyota Prius. Everyone from Ryan Gosling to Bradley Cooper to Drew Barrymore owns the popular hybrid vehicle!