From azcentral.com
<i> Strapping that Christmas tree to the top of a sport utility vehicle can be a real drag.
A couple of engineers at the University of Vermont claim that sport utility vehicles topped with trees have 26 percent more aerodynamic drag than treeless SUVs.
Knowing the energy density of gasoline, typical engine efficiencies and the number of trees sold, they concluded that an extra 53,000 gallons of gas are used each year to retrieve trees.
And given high fuel costs, that translates to a nationwide a total of about $100,000...</i> <A HREF="http://www.azcentral.com/offbeat/articles/1223Trees-SUVs-ON.html">Entire Story Here</A>
<i> Strapping that Christmas tree to the top of a sport utility vehicle can be a real drag.
A couple of engineers at the University of Vermont claim that sport utility vehicles topped with trees have 26 percent more aerodynamic drag than treeless SUVs.
Knowing the energy density of gasoline, typical engine efficiencies and the number of trees sold, they concluded that an extra 53,000 gallons of gas are used each year to retrieve trees.
And given high fuel costs, that translates to a nationwide a total of about $100,000...</i> <A HREF="http://www.azcentral.com/offbeat/articles/1223Trees-SUVs-ON.html">Entire Story Here</A>
