A research company is predicting more than half of new cars on the road will be powered by something other than a conventional gas engine by 2017.
But that doesn't mean these new cars won't rely on gasoline to fuel them.
According to Navigant Research, "Gasoline is anticipated to remain the leading fuel in the coming years, albeit in unconventional vehicles that employ a range of fuel-efficiency technologies, such as smaller engines and turbocharging."
Navigant looked at technology used in today's market to improve fuel economy, as well as global market forecasts for sales of light-duty vehicles, which are cars and trucks that seat 12 or fewer people.
The report says the biggest innovation in fuel economy at the moment is stop-start technology.
It automatically shuts the vehicle off when idling and then restarts the vehicle when the gas pedal is pressed. By 2025, Navigant predicts 58 percent of vehicles sold will utilize this technology. (Video via Nissan Australia)
Not too surprising, since it saves people money on gas.
AAA gave glowing recommendations for three vehicles with automatic stop-start systems, saying the technology could save drivers up to $179 in fuel annually. That figure is based on the assumption the consumer is driving about 15,000 miles a year.
But more than a week after the Navigant report was published, news came that sales of conventional gas-engine cars had increased in 2014, partly because of lower gas prices.
And the Detroit Free Press reported sales of gas-electric hybrid vehicles had actually decreased at the same time.
Those sales were down 9 percent. On the flip side, plug-in hybrid car sales increased 17 percent.
Federal regulations for fuel economy standards will likely play into the trend Navigant is predicting.
Back in 2011, the U.S. government decided all light-duty vehicles will need to have a combined city/highway rating of 54.5 miles per gallon by the year 2025.
Navigant says global auto sales will jump to 109 million by 2025, the same year all vehicles need that 54.5 miles-per-gallon rating. Global auto sales currently stand at around 84 million.
This video includes images from Getty Images.