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Old World engines, often referring to early internal combustion engines, were engineering marvels that powered the Industrial Revolution and beyond, with designs like the steam engine paving the way for modern machinery. The 1885 Daimler Reitwagen, considered one of the first motorcycles, used a single-cylinder Otto-cycle engine, producing a mere 0.5 horsepower yet reaching speeds up to 7 mph. These engines were notoriously inefficient, often converting less than 10% of fuel energy into usable w