6. Are hybrids small and underpowered?

Initial hybrid models emphasized fuel economy, so were much lighter vehicles, and had smaller engines. The objective was to offset the loss of power in the ICE with additional power from the electric motor. This would result in essentially the same level of power while burning less fuel.

But this principle does not have to result in underpowered vehicles. In fact the Lexus Rx400h and Toyota Highlander Hybrid both have a 270 horsepower power system. And the Lexus GS 450h hybrid sedan is expected to have more than 300 horsepower and go 0-to-60 in less than six seconds. Taking the quest for hybrid power even further, the Toyota Volta concept venicle has a 408 hp power plant.

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7. What is the main reason people buy hybrid vehicles?

Saving money on fuel is the first thing most buyers think of. But, in fact, the amount saved on fuel over the life of the vehicle may not equal the extra purchase cost of the hybrid.

There are obviously other factors at play in the gradually building popularity of hybrids. Some people want to make a "green" statement, others simply want to be the first on the block with a new and promising technology.

8. Will hybrid technology save the environment?

There's no doubt about it. Hybrids are becoming more popular. In the past five years hybrid sales in the U.S. have grown 2000 percent. Sales in 2000 were 9,500, and by the end of 2005 had grown to over 200,000.

But even this larger number is just 1.2% of the 17 million new cars sold last year. If every hybrid gave double the current fuel economy, from an average of 20 mpg to, say, 40 mpg, that would save roughly 100,000 gallons of gasoline a day. But that amount pales in comparison to the total daily gasoline consumption in the U.S. -- 400 million gallons! The savings of 100,000 gallons would bring that number all the way down to ... 399,900,000 gallons.

Not very significant. Obviously governments and auto makers will have to start getting very serious about hybrid technology before it will make a significant difference.

9. Does that mean hybrid technology is only a fad?

No it does not. Because the only way towards a sustainable future is to find a combination of fuels that will reduce our almost total dependence on oil. Hydrogen fueled vehicles will be part of that future, as will fuel cells, deisel, and alternative fuels such as ethanol.

But what is almost certain is that every promising solution will involve some kind of hybrid combination of technologies. So today's hybrid vehicles are an important and necessary step towards a much more promising and sustainable future.

Rick Hendershot does website promotion