What is the carbon footprint of a Toyota Prius at 100MPH compared to that at 70MPH?
http://news.yahoo.com/s/ap/20070704/ap_o...
Answer:
I just saw that on FOX news but couldn't find it in yahoo news, its almost like they don't want anyone to know about from it the way they've buried it. Thanks for the link.
But to answer your question, it has to obey the laws of physics that say gasoline consumption goes up with the square of velocity. Even though a surprising number of environmentally "responsible" motorists deny it.
This doesn't sound like a serious question, but obviously the faster any car is driving on the highway the less fuel efficient it is.
1st we need a formula for this mystic carbon footprint.
Do you know that Gore actually purchases these credits from a company he owns? I guess they plant a tree, in your name. It's like lighting a candle so you can continue sinning. Kind of a warped idea.
Edit:
I don't know what was there, but the story of Gore's son's arrest is now the target of the link. Always nice to know that the media will always go to the lowest story...definitely agenda driven!
In the case of the Prius, it's a whole lot less. And, contrary to the opinions put forth in your first two answers, gas mileage is NOT directly proportional to speed. Peak engine efficiency is often reached in the mid to upper range of RPMs. Transmission gearing is also matched to engine performance to optimize gas mileage at highway speeds - drag coefficient is often, but not always taken into account.
Operating below that peak means lower gas mileage.
The laws of nature will tell you that a car when it goes faster has to use more horsepower which in turn results in cause it to use more gas. The main reason for this is wind resistance. Studies will all say that cars get the best milage at around 55, but here a couple of years ago in OK they changed to 65 because people were getting fed up with driving slow in town and on the interstates...I saw a show the other day where the were test driving the fastest production car in the world the Bugatti Veyron. To get it to 300 mph, the thing has to have 1000 horsepower, the faster you go the more horses!! Most modern cars while cruising down the highway may only be using 20-30 horsepower at regular driving speeds...
A rough formula is it takes 8X the fuel (and horsepower) to go double the speed (cube function of speed) due to air resistance.
Since you are talking ~1.4X the speed then you would be using around 2.75 times as much fuel.
I didn't think a Prius would go that fast to begin with *lol*
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