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A novel fuel-injection system achieves 64 miles per gallon.
The car is an engineering achievement, but it could easily be even more appealing.
Aerospace companies are working on hybrid electric airplanes, and the earliest versions will likely arrive before the end of the decade.
The automaker aims to bring a cheap hybrid technology used in some large vehicles to passenger cars.
A new Mazda model debuting in Japan gets its high fuel economy from an improved gas engine and a lightweight design.
Increasing mileage standards to 54.5 mpg won’t require major new technologies, say experts.
A GM-funded bus could reduce transit agencies’ fuel bills by 80 percent.