The gas prices are rising. I use quite an efficient (although somewhat old) diesel car with a TDI engine and I run it with biodiesel (I just can get B10). Last Saturday, I filled up and the price had reached the psycological barrier of 1 EUR per liter.
My car usually gets 6-7 liters per 100km (100 km / 6.5 L * 1 mile / 1.6 km * 3.81 l / 1 gal = 36
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