Stars and their eco-friendly cars

Who needs a massive, gas-guzzling trailer taking up room on a movie set when you can just as easily catch a curbside snooze in your car during breaks in the filming schedule? Not actress Annette Bening, shown here catching some Z's on a Los Angeles street in her Lexus GS 450h. Not only does this gas-electric hybrid get about 30 mpg, it is quite luxurious as well.

2013 Lexus GS 450h

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Hard to believe that Aussie pop star and '80s teen sensation Kylie Minogue is celebrating 25 years rocking the charts. When not headlining in a different city every night, Minogue lives a "green" life in London. Until recently, she drove this Lexus CT 200h hybrid. She auctioned it off last summer, raising nearly $50,000 for her dearest charity, the National Society for the Prevention of Cruelty to Children in the U.K.

2013 Lexus CT 200h

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Tony Award-winning Broadway actor and comedian James Corden may have recently taken on a new role as husband — he wed Julia Carey on Sept. 14 — but he still drives a Porsche like a tony bachelor should. However, this 2011 Porsche is a hybrid — a Cayenne S Hybrid, to be precise — and while it still drives like the sportiest of utility vehicles, it gets 25 percent better fuel economy than the standard Cayenne.

2012 Porsche Cayenne Hybrid

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An early adopter of green transportation and a renowned eco-warrior, George Clooney bought the first Tango T600 electric sports car when it came off the assembly line back in 2005. Clooney can easily dodge Los Angeles traffic and the paparazzi in this tiny rocket, a 2-seater tandem that's just 39 inches wide and can accelerate from zero to 60 mph in just 4 seconds. As you can imagine, it's also easy to park.

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Alicia Silverstone might look like she's moonlighting as a parking-lot security guard while talking on the phone in an oversized golf cart. But the vegan actress is a hard-core green crusader in her cutting-edge Global Electric Motorcar E825, a low-speed vehicle that's 10 inches wider than your standard country-club transport and street-legal up to 25 mph.

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Although his Toyota Highlander Hybrid sports a vanity plate displaying his affection for his niece Shiloh, the daughter of Angelina Jolie and Brad Pitt, actor James Haven isn't ready to follow in his famous sister's footsteps and raise his own brood with long-time girlfriend Ashley Reign. Perhaps the Highlander Hybrid's ample storage room and backseat are for babysitting the Jolie-Pitt kids.

2013 Toyota Highlander Hybrid

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While he may prefer muscle — cars, that is, as his favorite ride is a 1965 Mustang convertible — Jeremy Piven moves through automobiles almost as fast as model girlfriends. He was seen recently in this cutting-edge, hydrogen-powered BMW 7-Series. He's also been seen driving a Lexus hybrid. And while Piven is a big proponent of fuel-efficient cars, his garage still reveals his love for America's finest, including a 1971 Oldsmobile 442 and a 1977 Ford Bronco.

2012 BMW 7-Series

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Hilary Duff was spotted cruising in this Global Electric Motorcar e4, but that's about as green as this actress — who recently signed with 20th Century Fox TV to develop a half-hour sitcom — gets when it comes to getting around. Back home, she drives a silver Mercedes G-Class SUV given to her by hockey-playing hubby Mike Comrie as a wedding present.

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A longtime e-car fan, David Duchovny moderated a 2011 Tribeca Film Festival panel discussion after the premiere of "The Revenge of the Electric Car," a documentary about the global resurgence of plug-in electric vehicles. He owned one of only two electric Toyota RAV4s but sold it when he moved to New York, because of the lack of accessible plug-in charging, saying he "felt tethered" by the electric crossover's 80-miles-per-day limit.

2013 Toyota RAV4

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Teen heartthrob Justin Bieber received a chrome-plated Fisker Karma as a gift from his manager on his 18th birthday. The Bieb has denied recent reports that he re-gifted the car to fellow star Sean Kingston. But after he got a ticket after a high-speed paparazzi chase last summer — and Consumer Reports' repeated panning of the $107,850 luxury plug-in hybrid — we wouldn't be surprised if his affection for the car lasts about as long as those of his fans once they reach puberty.

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Demi Moore can be seen cruising La-La Land these days in a fully loaded Lexus LS 600h L hybrid. The car, with a price tag of $112,000, reportedly was a gift from her ex-boy-toy, Ashton Kutcher, as part of a last-ditch effort to save their marriage after rumors surfaced that he and a waitress had more than just a tableside chat. The car is a keeper. Kutcher? Not so much.

2013 Lexus LS 600h

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Seen recently in a Ford Think electric car, Leonardo DiCaprio continues to put his money where his mouth and heart are, and has used his A-list status to highlight the causes that he believes are doing good, environmentally responsible work. The first person to own a Fisker, he recently made an "equity investment" in the company. Besides a Fisker, his garage also houses a Lexus hybrid.

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Although he's low-profile here in a Toyota Prius, Brad Pitt has put himself front and center of the sustainable-living cause. Calling for less reliance on fossil fuels, he swapped his fleet of conventional cars for hybrids. He's also the voice of a Public Broadcasting Service series on green design, he has worked with the environmental organization Global Green USA on the redevelopment of post-Katrina New Orleans, and his Make It Right Foundation is building 150 houses in the city's decimated Ninth Ward using green technology and materials.

2013 Toyota Prius

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For more information on the vehicles in this slideshow, click the links below:

-Lexus GS 450h
-Lexus CT 200h
-Porsche Cayenne S Hybrid
-Toyota Highlander Hybrid
-BMW 7-Series
-Toyota RAV4
-Lexus LS 600h
-Toyota Prius

Doug Newcomb has been writing about automotive-related topics since 1988. His work has appeared in Consumers Digest, Road & Track, Rolling Stone, Men's Journal and many other publications. His book, Car Audio for Dummies, is available from Wiley Publishing.