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It seems like a no brainer to me. You can push around 3,000-6,000 pounds of steel with probably one person inside or 300-500 pounds with a person on it. Which is more work? Obviously the car requires greater energy to travel to the same destination. So in energy use, a motorcycle is the clear winner by inspection alone.

I didn't see the show or click on your link, but I'm guessing the motorcycle lost because of emission content percentages per mile and not per gallon of fuel. Emission standards aren't as high on motorcycles because they probably don't contribute much to pollution.

I think it is interesting to note that our fuel consumption is not even lower because we are around six times lighter. My 1996 Accord gets 27-31 mpg and my bike gets 56-63 mpg. Maybe the fun factor takes a toll by affecting the way I drive my motorcycle verses my car.

I imagine if enough people care about the scientific accuracy they will pester Myth-Busters and show them the correct way to think about it. Every time I check in with the show I am impressed by how much better they use the scientific method.
 

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I've been thinking about this and I think the environmentally correct way is to compare the emission composition for one gallon burned. The environment doesn't care what you did with that one gallon. I think we will find that motorcycles suck compared to cars because there are not as many and the emissions are not as refined as cars. I can smell my CBR exhaust. It took nearly 150,000 miles in my car before I noticed the exhaust smell.

Another comparison is obviously per mile. For this comparison I would also take into account in the environmental toll of creating plastic and the metal mining required to create either a car or a motorcycle. Maybe that Prius isn't better for the environment than the car you already own ;)

We have the measurement that capitalists prefer, the almighty (insert currency here.) Motorcycles win hands down. Well not Harley's, but everything else ;) We spend less on the vehicle (ignoring Duc's) and for the most part less on gas.

Finally we have fun. All your base are belong to us, argument over.:p
 
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