That's because we all may be sipping lattes in the future, compulsively, and saving ourselves plenty of money in fuel costs as well.
How come? Acording to the folks at Consumer Energy Report, scientists at the University of Nevada Reno have managed to convert used coffee grounds (the gunk you toss in the trash every day) into usable biodiesel fuel. According to the report, the conversion process is cheap and eco-friendly, and it's chemically more stable than corn- and soy-based fuels as well. Now, we can't predict what mileage benefit there might be from a gallon of java-juice, but heck, with a Starbuck's at just about every Interstate off-ramp nowadays, we shouldn't need to worry about running out of gas. As for emissions . . . well, we don't know about that, either, but at least your tailpipe should smell good in the morning.