BusinessWeek recently published an article "Is GM's Green Tech Better Than Toyota's?"
Here at RawEco, we believe that hybrids are simply a gas saving measure that are really just a stepping stone to a fully fossil-fuel-free transportation system that involves battery/capacitor electric cars and solar or wind-generated electricity. We really aren't partial to Toyota, Honda or GM in terms of their current halfway technology.
However, we are partial to accurate reporting.
The article claims:
"The advantage of GM's so-called two-mode system, points out GM's Larry Nitz, who has headed the automaker's venture with the other three companies, is that the engine speed remains constant when the gears of the vehicle are changing. This is extremely important in the performance of a pickup or SUV when it is carrying loads or going uphill. The power is sent to the wheels mechanically through a series of clutches and gears. In a conventional hybrid, such as Toyota's, power is sent to the wheels electrically, which is less effective for bigger vehicles."
This is a very odd statement. First of all, Toyota's Prius/Camry hybrid systems use a CVT transmission along with multiple electic motors/generators. By definition, a CVT can maintain engine RPMs at a constant rate while vehicle speed varies. So the statement "The advantage of GM's so-called two-mode system... is that the engine speed remains constant when the gears of the vehicle are changing" is not only inaccurate, but misrepresenting Toyota's Synergy system.
Furthermore, the second statement "In a conventional hybrid, such as Toyota's, power is sent to the wheels electrically, which is less effective for bigger vehicles" is simply absurd. Perhaps this journalist is not aware of modern locomotives or subway systems. Modern diesel-electric locomotives can best be described as "series hybrids" like GM's upcoming Volt. Here, a massive diesel generator creates electricity which is used to power electric motors. It seems that the electric motors do just fine hauling 12,000,000 pounds of freight. In fact, according to the all-knowing wikipedia: "As is the case with any vehicle powered by an internal combustion engine, diesel locomotives require some type of power transmission system to couple the output of the prime mover to the driving wheels. In the early days of diesel railroad propulsion development, electric, hydraulic and mechanical power transmission systems were all employed with varying degrees of success. Of the three, electric transmission proved to be most practical, and, except for some diesel-hydraulic locomotives manufactured for lower power applications, nearly all modern Diesel-powered locomotives are diesel-electric."
Similarly, subway systems are pure-electric drive, and, last we checked, can easily haul more than a gas guzzling BMW or GM Suburban.