Performance

The batteries in hybrid cars now get recharged slightly whenever the driver taps the brakes. If research at Honda pans out, heat from the engines could do the same thing.

The Japanese auto giant has released a paper detailing how a Rankine cycle co-generation unit could help recharge the battery in a hybrid and thereby increase gas mileage, according to Green Car Congress. Honda put the Rankine unit in a test car (a Honda Stream) and found that the unit generated more electricity than regenerative braking. However, the unit isn't very efficient so more work will be required before … Read more

It's sort of like an organ transplant for cars.

Transonic Combustion, which has been relatively secretive until now, has created a fuel injection system that will let diesel engines run on regular gasoline. Diesel engines get better mileage than regular gas engines, explained CEO Mike Cheiky in an interview. However, diesels typically emit more particulates. Gas is also far more readily available than diesel in the U.S. Insert Transonic's components into a diesel engine and you get the best of both worlds.

Additionally, the company's fuel injection system dramatically increases the internal compression in an engine, … Read more

Hot hatchback aficionados dream of a car like the 2008 Volkswagen R32. Where most hot hatchbacks, such as the 2007 Honda Civic Si, use front-wheel drive and a four-cylinder engine, the R32 upgrades those specs with all-wheel drive and a 3.2-liter V-6, giving it exceptional handling and power that doesn't fade at high speed. And the look of the R32 is about as refined as a hatchback can be.

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With all the talk of new, fuel-efficient vehicles, those of us who are still driving our regular old cars might feel left out. But there are still ways we can help save gas -- and money -- by making relatively simple adjustments to our cars and driving habits.

Change the air filter. The air filter is a crucial component to minimizing fuel use and maximizing horsepower. Bryan Gregory, director of consumer education for Advance Auto Parts, says it takes an engine about 10,000 gallons of air to combust one gallon of gas. So it makes sense, then, that the … Read more

SAN JOSE, Calif.--If you were to see this 1969 Volkswagen Beetle, missing a couple of tires, its engine compartment and hood open, and its interior feeling very much like a work in progress, you'd probably mistake it for one of the countless automotive projects currently under way in American garages and driveways.

You certainly wouldn't think any special was afoot.

But this is no normal '69 Bug.

No, this little machine, which on a Friday afternoon still looks a lot closer to a junkyard than a highway, is actually awaiting the finishing touches that will have it … Read more

Comedian Jay Leno is known for his coveted collection of performance cars, but here is one Leno's babies that had eyebrows raising all over the SEMA show here in Las Vegas. This Pratt & Miller-designed road rocket come with an 8.2-liter engine--that's 1.2-liters more displacement than the "regular" competition Corvette CR.6 on which it's based. Not only is it equipped with a T-56 six-speed transmission, Arvin Meritor dynamic ride control suspension, and a K&N air filter with carbon-fiber ram air induction, it also has a Dewitt high-capacity aluminum radiator with … Read more

The days of manually checking your oil with a dipstick may soon be over. Debuting at this year's SEMA show, Intellistick's Oil Condition Monitor uses a series of sensors to constantly monitor the electrical properties--and therefore the condition--of your car's oil.

This information is then sent to the driver's PDA using (what else?) Bluetooth, meaning that, without even popping the hood, drivers can know exactly when to change their oil. Check out Brian Cooley's video of the device, complete with a lesson in petrochemical decomposition.

GM is one of a growing number of automakers that is using the SEMA show to debut modified or concept versions of existing production models. One of the stars of the GM booth is the Pontiac Solstice SD-290, a modified version of the popular roadster. The SD-290 features a covered passenger cockpit, some sharp body styling, and a turbocharged 2-liter Ecotec power plant good for 290 horsepower (hence the designation). This Solstice also sports a custom front fascia, hood and front fascia, and grille inserts.

Performance upgrades include 3-piston, 13-inch stainless-steel caliper brakes, a custom exhaust from Solo Performance, and … Read more

Next time someone tells you that four cylinders are not sufficient for a performance car, show them these pictures. Powered by a 3-liter Dodge Mopar Hellfire "Lil Hemi" four-cylinder engine, the Speed Demon looks--and goes--like an F-16 without wings.

According to Ron Main, one of the Speed Demon's designers, the single-seater car road rocket, which features a chrome moly steel chassis and composite body, reached a top speed of 353.414mph on Bonneville salt flats, Utah, earlier this year. The car is turning heads at this week's SEMA 2007 show, where it has just won the … Read more