Fuel efficiency of one car may be cancelled by your next car purchase: Findings have implications for carbon emissions and the design of fuel economy programs like Cash-for-Clunkers – Science Daily

In a recent collaborative study led by the University of Maryland (UMD), researchers find that consumers tend to buy something less fuel efficient than they normally would for their second car after springing for an eco-friendly vehicle. While this sounds like an all-too-logical conclusion, the study reports a 57% reduction in the benefits of driving your fuel efficient car for carbon emissions purely based on the purchase of your second vehicle. Since about three-quarters of cars are purchased…

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