Besides the four seat Chevy Volt compact car that will lauch at the end of the year, there is evidence GM will shortly be unveiling a seven seat Voltec microvan. It is unknown at this time if that car is production intent. Voltec is GM’s name for the extended range electric car platform the Volt uses, allowing 40 miles of gas free driving followed by unlimited gas-generated range.
Diversification of Voltec technology into different vehicle types is the hope of many enthusiasts who would like to see the technology in other platforms. Commonly the idea of a Voltec large truck or SUV is proposed. It appears, however, GM has no plans to attempt that at the present time.
Alan Taub is GM’s Vice President of R&D who replaced the recently retired Larry Burns. In a new interview with the British publication Autocar, Taub discussed the idea.
“With battery technology as it currently stands, extended-range vehicles that are larger than the Volt — luxury saloons, trucks and SUVs — aren’t really possible,” he said. “They would simply be too heavy to be efficient.”
Hydrogen fuel cells are apparently GMs plan for larger trucks.
“For those types of cars,” says Taub. “Fuel cells and biofuels are the future.”
Taub also notes Voltec cars cant be too small either.
“Ironically enough, the E-REV powertrain won’t really package in a much smaller car than the Volt, either,” he adds. “So expect them all to be between four and five metres long.”
Taub sees the cost of fuel cell cars and precious metal content to diminish significantly over the next decade.
“Fuel cell technology is looking much cheaper today than it did a few years ago,” he said. “Within 12 years, we’re expecting an average family car powered by a hydrogen fuel cell to be as cheap to produce as one with an internal combustion engine,” he added.
Taub believes the battery will one day replace the combustion engine “when it comes to small cars…absolutely.”
For larger vehicles and trucks though “the advantage you gain with an electric powertrain becomes less significant than the weight penalty associated with fitting enough batteries to run it.”
This will be true for the foreseeable future he believes “until the next big leap forward in battery technology after lithium ion.”
Source (Autocar)







