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The Invention of the automobile was a major breakthrough in American history and has done great things for this country and its people The car did most of its developing and popularity gaining during the mid late 20th century People really need to understand how the automobiles of this time have evolved from their ancestors and influenced the way we live and drive today Lots of the changes improved things in a positive way but there are some negative factors that could be viewed as well but overall this machine has become one of the most popular and common sources of transportation in the United StatesOne of the main differences of automobiles in this time period to modern day was fuel efficiency Fuel efficiency is obviously a big issue nowadays due to expensive fuel prices However this was not the case in the 1900s For those who are not familiar with fuel efficiency fuel efficiency is how many miles your vehicle will travel per gallon of fuel The higher the miles your car gets the more efficient it is David stated that when the automobile first became introduced into the market miles per gallon mpg started off high in 1900 since autos were small had tiny engines and top speeds about the same as a bicycle But mpg dropped rapidly during the first decade as autos became larger and more powerful As dirt roads became paved mpg improved After 1920 mpg seems to have stayed in the range of 13-15 mpg until federally mandated fuel economy standards were enacted in the 1970s As a result fuel-efficiency increased from 13 mpg to 21 mpg over the next 25 years after 1970 Fuel efficiency of travel in the 20th century The most common popular source of fuel for automobiles is gasoline Diesel fuel was also slowly introduced but gasoline is more common Efficiency in internal combustion engines during the 20th century was not the
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