Update: The Chevy Volt, the Electric Car of the Future

Progress continues on the electric car that could change everything we know about green transportation.

| Oct. 29, 2008

The Chevrolet Volt is perhaps the most highly anticipated car in recent history. It’s not quite an electric vehicle, a gasoline-electric hybrid or a plug-in hybrid, but has characteristics of all three. What’s easier to say is this car, assuming it comes to fruition, could be a game changer — not only for the parent company General Motors and the rest of the auto industry, but also for everything we know about “green” transportation.

How the Volt Works

The Volt’s groundbreaking design has both an internal combustion engine and an electric motor. But gasoline does not propel the car — electricity is the sole means by which the Volt moves. The gasoline engine acts as a range extender, generating electricity to recharge the lithium-ion batteries when they run low.

Because the gasoline engine doesn’t directly power the car as it would in a more typical hybrid, such as the Toyota Prius, it is relatively small (1.4 liter 4-cylinder) and is designed to run at an optimum efficiency for the single purpose of generating electricity.

Flexible Fuel

The Volt uses a clever structure GM calls E-Flex, which allows the basic Volt design to be adapted for specific markets around the world. In Europe, for example, a small diesel engine will likely replace the gasoline engine for the range extender. GM has also shown a version of the Volt with a hydrogen fuel cell stack in lieu of the gas engine.

40 Miles and No Gas

One of the primary goals for the Volt is to enable it to operate for 40 miles strictly as an electric vehicle, without assistance from the range extender. Forty miles, GM says, is enough to cover normal daily commutes and driving. If that’s true for you, you wouldn’t use a drop of gasoline to get around town. Beyond 40 miles, your fuel economy would be about 50 miles per gallon for each additional mile driven. So if you drive 90 miles total with the range extender running for the last 50 miles, your fuel economy would be the equivalent of 90 mpg.

Exactly how much total range the Volt will have is unknown at this time, but expect about 400 (40 miles of battery-only operation; 360 more with the assistance of the range extender). A larger fuel tank could add more range, but GM thinks the current plan for 7-gallon tank provides the best balance between additional weight and range.

12/8/2008 10:47:50 PM

papastardust hit the nail on the head. GM has some of the best spin doctors anywhere. They have managed to get press releases and articles published in trade-related consumer magazines for decades. Half a century ago, they were trumpeting the "wonderful" advances GM cars pioneered which made all cars safer or smoother riding or whatever. Actually, at that time, they weren't stretching too far. Alfred Sloan and his contemporaries were great innovators, and working for a large corporation like GM ensured that at least some pf their best ideas would be applied to GM vehicles. Alas, since the sixties (more or less), American car makers have been outpaced in design, innovation, overall quality, and value by manufacturers which are based, in many cases, in countries which were at war with the Allies in WWII. But GM still is able to convince the media that they have great ideas. Like the Vega, Chevette, and other models with great concepts but poor execution. Chevrolet keeps promising the stars and delivering dust, while the public increasingly votes with their pocketbooks - across the street. How they plan to market a car with a non-existent technology (at the price point they are proposing) is a great mystery. Perhaps when it doesn't work out, they will try to shift the blame to Panasonic or Epson; nobody would believe them if they pointed to Toyota or Hyundai anymore. It is wishful thinking by a bunch of desperate, rich executives, I fear.

11/4/2008 10:28:12 AM

I'm glad to see us getting somewhere... ...if only within the stupid, greedy, profit-driven structure. We've got to work with what we have. It's not ideal in any way, but that's what's there. Until we manage to change what motivates our society, that's what we've got to work with. If we can't (or won't) do that, in the big picture, we won't get anywhere at all. Unfortunately, a $30-40K four-seater isn't realistic-- or even really viable-- for a family of five on $27K a year. So for us, it looks like it's going to be being as sparing as possible with the most efficient used compact conventional or gas/electric hybrid vehicle we can get our hands on for the forseeable future. Probably for a lot of other families, too. It's too bad everything "has" to be driven by the profit motive.

11/3/2008 2:22:54 PM

Why don't they put a photovoltaic cell in the roof of the car to charge it while it is sitting at the office for 8 hours a day! wouldn't that make the car truly green and help extend your range for your commute. With the advances in technology in the PV industry you would think that it could be installed so that it would be integral and not look like a piece of plywood on the roof.

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