Some biofuels, like biogas from landfills—or synthetic methane—are attractive for use in vehicles as they have a potentially low energy cost to produce. They also have lower criteria emissions, of the sort that affect human health and cause smog. These engines should easily be cross-compatible with those using compressed natural gas...
Over the nine years this site has published daily news about green cars, the focus of our coverage has shifted significantly. In February 2009, when we started daily coverage, our most popular topics were hybrid cars and the Toyota Prius. With Prius sales in 2017 less than half what they were just four years ago, the times have clearly changed...
No single definition exists for the idea of "green car," and very few shoppers set out to go buy a green car. Instead, car buyers look for vehicles that meet their needs—with fuel economy or energy efficiency somewhere in that list of needs, whether higher or lower. Certainly the definition of "green car" has evolved since this site began...
Following years of debate, the EPA said earlier this month it will study the possibilities of cutting the amount of ethanol in the United States' gasoline supply. Since 2007, the Renewable Fuel Standard (RFS) has required growing amounts of ethanol to be blended into U.S. fuel supplies, with E10—a mix of 10 percent ethanol and 90 percent...
Since 2007, the Renewable Fuel Standard has required increasing levels of ethanol in gasoline blends sold in the U.S. Most fuel stations across the United States no longer offer pure gasoline, with E10—a blend of 10 percent ethanol and 90 percent gasoline—prevailing. After years of debate, the EPA has now announced it will study the...
Electric cars may receive most of the attention within the realm of alternative propulsion methods, but liquid hydrocarbon fuels will be with us for many decades to come. The challenge then becomes how to reduce the carbon footprint of extracting, transporting, refining, and burning those fuels to reduce the damage they impose on the environment...
Even with aggressive promotion of battery-electric or hydrogen fuel-cell cars, hundreds of millions of internal-combustion vehicles will remain on the world's roads for decades to come. But estimates of exactly how many internal-combustion cars will be displaced by alternatives in a given period vary wildly. One alternative-fuels lobbying group...
As the old saying goes: the enemy of my enemy is my friend. The biofuel and fossil-fuel lobbies have argued in the past over the blending of biofuels with the general fuel supply. But now the two groups have found something they can agree on. DON'T MISS: Sierra Club to sue EPA over failure to report on ethanol A U.S. biofuel-lobbying group is...
When it comes to alternative fuels, the discussion usually centers around compressed natural gas, or biofuels like ethanol or biodiesel. But before the concept of low-carbon or carbon-neutral fuels even existed, a few early makers and desperate drivers tried something completely different. They powered their vehicles with wood, the same fuel used...
A new package of laws drafted by the European Commission aims to reduce consumption of fossil fuels within the European Union. Called "Clean Energy for All Europeans," the plan calls for emissions reductions in both the transportation and energy sectors, as well as increased use of renewable energy for electricity generation, and biodiesel for...
The Autotram Extra Grand bus is 98 feet long and can carry 256 passengers.
