Sarah Breedlove (1867-1919) was the daughter of freed slaves. Orphaned at age 7, she married at 14 and had her only daughter at age 18. Two years later her husband C.J. Walker was murdered. Due to this hardship her hair fell out. She experimented with a variety of home-made remedies and later she began selling Madam Walker's Wonderful Hair Grower, followed by a whole range of hair products, the Walker System. The business success made her the first known African-American woman to become a self-made millionaire.
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The HyDrid is a hydraulic hybrid drive train for road vehicles. In this new concept, the complete mechanical transmission of a car is replaced by a full hydrostatic transmission, allowing energy recuperation and an efficient operation. The concept requires extremely efficient hydrostatic pumps, motors and transformers, which have been developed recently. Simulation by the German Institute for Fluid Power Drives and Controls (IFAS) at RWTH Aachen University proved that an average fuel consumption of 3.1 liter per 100 km (or 77 MPG) is possible for a mid-sized (1450 kg) passenger car.
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