70 million motor vehicles were on the world's roads in 1950
630 million motor vehicles were on the world's roads in 1994
1 billion motor vehicles are expected to be on the world's roads by 2025, if the current growth rate continues
12,000 pounds of carbon dioxide are emitted by the average car each year
5 percent of a car's fuel can be wasted by underinflated tires
2 billion gallons of gasoline could be saved annually if 65 million car owners kept their tires properly inflated
85 percent of auto fuel is consumed just to overcome inertia and start the wheels turning
2.5 times more emissions are generated by SUVs and light trucks than by standard cars
33,000 natural gas vehicles were in use in the U.S. in 1993
75,000 natural gas vehicles were in use in the U.S. in 1998
50 million new cars roll off the assembly line each year
11 million cars are junked annually in the U.S.
Sources:
1-3 -- World Resources Institute
4 -- Environmental Working Group
5,6 --
50 Simple Things You Can Do to Save the Earth 7 --
Amicus Journal 8 --
L.A. Times 9,10 -- U.S. Department of Transportation
11 --
Amicus Journal 12 --
Wall Street Journal.
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