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First passenger car
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First Motorcycle
The first motorcycle, Motrice Pia, was built in Italy, it had .24 horsepower Museonicolis Image -
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First mass production
The first affordable autombile, the Model-T with 22 horsepower Image History.com -
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DOHC
Dual overhead camshafts replace pushrods, further controlling airflow into the engine, increasing fuel-burning efficiency. camshaft info Image -
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Direct injection
The modern version of fuel injection, mixes in engine, not intake manifold Howstuffworks Image -
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Hybrids
The first mass production of Hybrid cars, the first being the Honda Insight with 61-70 mpg Image Hybrid Cars -