Hybrid versus Hummer

Art Spinella of CNW Marketing Research has created a stir with his calculations that some hybrid cars use more energy than less-green vehicles such as the Hummer.

Spinella argues that by the time vehicle life, frame and accessory creation, and other items are factored in, the overall "dust to dust" energy consumption can be very different than if you simply consider gas mileage.

Here is another view on Spinella’s dust to dust theory from hybridcars.com. He notes that the calculations will change as more hybrids are produced because the energy costs to do so will drop.