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Dongfeng "Hummer" – Click above for high-res image gallery

2011 Volkswagen Tiguan – Click above for high-res image gallery

There are broad strokes that you can take toward increased efficiency. Going that route results in expensive new technology or plucking the low-hanging fruit. The other way, of course, is to optimize everything obsessively, from wheel bearings to wiper blades. Engine oil is a vital, yet unsung necessity, and it can play a big role in fuel consumption as well as its obvious task of protecting the engine's internals.

Just a few days ago, we told you about Germany's commitment of $2 billion for the construction of at least 1,000 hydrogen refueling stations. A month ago, we learned about London's decision to build a network of hydrogen filling stations in time for the 2012 Olympics. But, outside of California's Hydrogen Highway, we don't hear too much about the progress of hydrogen infrastructure and hydrogen fuel cell vehicles here in the U.S. Don't worry; this story is no different.

2011 BMW 535Li – Click above for high-res image gallery

Geely Gleagle GS – Click above for high-res image gallery

While General Motors is busy making marketing hay from its early payoff of $5.8 billion in loans, Senator Chuck Grassley and House Representative Darrell Issa aren't buying it. "It looks like GM merely used one source of TARP funds to repay another," said Grassley of General Motors financial moves. Grassley has asked for justification of the creative money-shuffling from Treasury Secretary Timothy Geithner.

This is interesting. As you cop-car fans well know, Ford recently introduced an all new Police Interceptor. After centuries decades of sticking with the body-on-frame, RWD Panther-platform Crown Victoria, Ford made the decision to go with the unit-bodied, front- or all-wheel drive Taurus chassis. They've beefed the full-size family hauler up to Herculean stature (claiming that it can withstand a 70 mph rear-end collision!) and by all accounts it should do just fine in the high speed pursuit biz.

Critics have given Michael Schumacher a hard time all season so far over what can charitably be characterized as lackluster performance. Leading figures at the Mercedes-Benz GP team, however, have magnanimously attributed the problems to their car. But if his young teammate Nico Rosberg is currently second in the championship, having reached the podium twice so far this season (doubling his record from four seasons at Williams), then how can you blame the car?

We feel like a broken record around here when we say "biodiesel is having a hard time." Yes, the biodiesel tax credit expired at the end of 2009. Yes, the EU has tariffed U.S. biodiesel off the continent. Yes, the economy has totally crunked, forcing many small biodiesel operators to shutter their doors.

How Radar and Laser Detectors Work

People speed for plenty of reasons. Some claim they're in a hurry. Some aren't paying attention. Some do it for sport. Likewise, police have multiple motivations for ticketing speeders. Some officers claim driving anything over the speed limit is "unsafe." Some departments do it to fill municipal coffers hit hard by falling tax revenues. And yes, some do it for sport. Regardless of why