“There are 43 different vehicles that are going to get introduced into the shopping arena by the end of 2015, like this Honda CR-Z here. This is a hybrid electric vehicle,” Brooks said.
But Renner says unless we move to cleaner and more efficient fuels, as well as alternative propulsion systems, electric cars won't solve the environmental problem.
“If we don’t significantly change the bases on which our electricity systems are functioning, in other words if we use large amounts of coal and fossil fuels to produce electricity, then going with the electrical vehicles is not getting us all that far,” Renner said.
Industry experts say hydrogen fuel cells and experimental new materials, such as strong, lightweight magnesium and carbon composites, could dramatically improve energy efficiency in tomorrow's passenger vehicles. But such improvements are still years away. In today's car market, Steven Brooks says, gasoline prices are still driving people’s vehicle choices.
“The mid-size sedans are still the number-one-selling segment in the country, but the adoption of the small and hybrid vehicles is on the rise as the gas prices go up,” Brooks said.
According to the United Nations, emissions from road transport constitute more than 20 percent of greenhouse gases.
The Worldwatch study notes that even in developing countries, car travel distances have doubled in the past decade. Experts agree that to counter the public health and environmental impact of this trend, governments must develop better systems of public transportation.
最新
2013-11-27
2013-11-27
2013-11-27
2013-11-27
2013-11-27
2013-11-27