While many engineers are focusing their efforts on fuel cells and batteries, some are looking at a more pragmatic solution. Here's why: the trusty internal-combustion engine, a relic from the 19th century, could still be driving vehicles for many decades to come. (Published in the July 2008 issue)

We gathered up five middleweight contenders from Yamaha (Star), Harley-Davidson, Honda, Kawasaki and Suzuki, and rode them nearly 350 miles through some of California's best roads. We found that the smaller bikes had enough power, efficiency and comfort to impress. (Published in the July 2008 issue)

Our rookie tester puts the newest entry-level Audi through its paces at Infineon Raceway—and learns a thing or two about racing.

We averaged 45.72 mpg on a mix of cold starts and fast runs in freezing temperatures, rain and urban crawls. With a lead-footed Englander driving, that's very impressive—and it makes something of a mockery out of the Toyota Prius.

As gas prices soar and the AXP entry pool officially opens, we analyze all 64 entrants thus far based on six key factors. The result is the most comprehensive, up-to-date scouting report on the field for the ultimate 100-mpg car of tomorrow.

Taking a scientific look at the battle to build the first lithium-ion pack safe enough for the road, PM's resident geek turns up a street-legal battery formula all too forgotten in the recall-laden history of electronics.

Here are a half-dozen future engine technologies we saw at this month's exclusive SAE World Congress that, if put into production, could boost the fuel economy of our next generation of gas-powered cars.

In his biweekly Mechanic's Diary, PM's senior automotive editor takes a hint from his hippie days in a VW Microbus to imagine a mass-market electric vehicle that can get you can get to work and back on a single charge—the engine never starts, and you burn no gas.

Here at GM's top-secret Technical Center lies the high-tech bones of the Chevrolet Volt, which is looking more and more like it'll be in dealerships by 2010.

A year after releasing details to PM, the X Prize Foundation threw its official coming-out party for a 100-mpg challenge that could upend the automotive industry.

Get your bookmarks ready, because this is your one-stop shop for the first snaps when the cover comes off. PM's auto team is rubbing shoulders with New York's finest to satisfy your wide eyes, updating this story from the showroom floor with every new car there.

A New York-based startup wants to make the first air-powered car to hit U.S. roads a $17,800, 75-hp equivalent, 96-mph, four-door version of MDI's CityCAT that, thanks to a radical dual-energy engine, is said to travel up to 1000 miles with each tiny fill-up.

It’s easy to wax nostalgic about the original Challenger, but not so fast: The original recipe wasn’t without a bad taste or two. Time and tech should make the new SRT8 one of the most desirable cars on the planet.

(Published in the February 2008 issue)