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My car gets 40mpg going 55mph.
My car gets 32mpg going 70mph.
On my 300 mile trip home, it will take me 4 hours and 15 minutes at 70mph, it will take 5 hours and 25 minutes at 55 mph. So, is it worth saving 1.875 gallons ($7 now) if it takes 1 hour and 10 minutes longer (7.5 gallons vs 9.375 gallons)? It is a 20% reduction in the amount of gas I would need. Will this cause everybody to be on the road longer meaning more traffic jams (which use more gas, my car gets 24 mpg in city driving or stop & go)
The best bet would be to mandate every car sold sin 2010 has to be a hybrid. This would help with fuel use wasted in traffic and short trips around town.
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