Berkeley CSUA MOTD:Entry 49667
Berkeley CSUA MOTD
 
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2018/08/14 [General] UID:1000 Activity:popular
8/14    

2008/4/4-9 [Transportation/Car, Transportation/Car/RoadHogs] UID:49667 Activity:nil
4/4     "Slow Down a Little, Save a Lot of Gas"
        http://www.csua.org/u/l7s (finance.yahoo.com)
        \_ RIDE A BIKE and save even more gas.   Economically it boils down to
           what is your time worth?  Is driving faster going to save enough of
           your time to make up for the extra fuel cost?
           Their argument that it saves 'a lot of gas' is week, it pretty much
           just saves a little.
           \_ It's kind of depressing riding my bike to work and being passed
              by hundreds of cars.  Especially since many of the cars have
              driven an 50 miles to get there...
              \_ Change your bike route/time along heavy commute.  I used to
                 pass by cars along Shattuck in Oakland even on my heavy
                 mountain bike.
                 \_ Haha.  Unfortunately I'm travelling the wrong direction
                    for that.
           \_ PFT!  USE FOOT!  Ride bike will not help.  It just hides the
              costs of shipping and processing all that metal, exotic plastics
              and other earth destroying by products of the biking craze.  If
              everyone walked barefoot at all times there'd be no transport
              pollution at all.
2018/08/14 [General] UID:1000 Activity:popular
8/14    

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www.csua.org/u/l7s -> finance.yahoo.com/family-home/article/104752/Slow-Down-a-Lttle-Save-a-Lot-of-Gas
com Speeding on the highway adds a surprising amount to your fuel costs. With gas prices rising, gas-saving advice abounds: Drive more gently, don't carry extra stuff in your trunk, combine your shopping trips. This is all sound advice but there's one driving tip that will probably save you more gas than all the others, especially if you spend a lot of time on the highway: Slow down. Diesel: The Truck Stops Here In a typical family sedan, every 10 miles per hour you drive over 60 is like the price of gasoline going up about 54 cents a gallon. That figure will be even higher for less fuel-efficient vehicles that go fewer miles on a gallon to start with. When cruising on the highway, your car will be in its highest gear with the engine humming along at relatively low rpm's. All your car needs to do is maintain its speed by overcoming the combined friction of its own moving parts, the tires on the road surface and, most of all, the air flowing around, over and under it. Pushing air around actually takes up about 40% of a car's energy at highway speeds, according to Roger Clark, a fuel economy engineer for General Motors. More air builds up in front of the vehicle, and the low pressure "hole" trailing behind gets bigger, too. Together, these create an increasing suction that tends to pull back harder and harder the faster you drive. The increase is actually exponential, meaning wind resistance rises much more steeply between 70 and 80 mph than it does between 50 and 60. Every 10 mph faster reduces fuel economy by about 4 mpg, a figure that remains fairly constant regardless of vehicle size, Clark said. If a car gets 28 mpg at 65 mph, driving it at 75 would drop that to 24 mpg. That would be like paying 54 cents a gallon more for each of the 36 gallons used at 65 mph. That per-gallon price difference remains constant over any distance. Engineers at Consumer Reports magazine tested this theory by driving a Toyota Camry sedan and a Mercury Mountaineer SUV at various set cruising speeds on a stretch of flat highway. Driving the Camry at 75 mph instead of 65 dropped fuel economy from 35 mpg to 30. For the Mountaineer, fuel economy dropped from 21 to 18. Driving even slower, say 55 mph, could save slightly more gas. In fact, the old national 55 mph speed limit, instituted in 1974, was a response to the period's energy crisis. The crisis of the time involved literal gasoline shortages due to an international embargo. Gas stations were sometimes left with none to sell, and gas sales had to be rationed. The crisis passed, but the national 55 mph speed limit stayed on the books until the law was loosened in the 1980s. The law was unpopular in its day, and higher speeds have become so institutionalized that even the Environmental Protection Agency's fuel economy test cycle now includes speeds of up to 80 mph. Driving 10 miles per hour faster, assuming you don't lose time getting pulled over for a speeding ticket, does have the advantage of getting you to your destination 50 minutes sooner on that 400 mile trip. Whether that time difference is worth the added cost and risk is, ultimately, up to you. All information provided "as is" for informational purposes only, not intended for trading purposes or advice. nor any of independent providers is liable for any informational errors, incompleteness, or delays, or for any actions taken in reliance on information contained herein. site, you agree not to redistribute the information found therein. Answers is provided for informational purposes only, and no Q&A is intended for trading or investing purposes. shall not be responsible or liable for the accuracy, usefulness or availability of any Q&A information, and shall not be responsible or liable for any trading or investment decisions based on such information.
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finance.yahoo.com
Oil at $41 All-Time High on Supply Fear Fri 4:08am ET - Reuters Oil prices hit an all-time record on Friday fueled by global economic growth and enduring worries that gasoline supplies will struggle to meet peak summer demand in the United States. No Time is the Right Time for Sub-Prime by Suze Orman My bet is that if your doctor tells you to scale back on the saturated fat to avoid a life-threatening heart disease, you're probably going to listen. Well, for the next few minutes, I am your financial doctor. To Select Great Stocks, Home In On High EPS Ratings Investor's Business Daily Decades of research show earnings power is the biggest factor in a stock's success.