1921-2004 20thcentury alternativefuels autobiography automobiles biography chemistry combustion computercontrolsystems designandconstruction dieselmotor fuelcellvehicles general history hydrogenasfuel internalcombustionengines liquidpropellantrockets marysherman morgan motors motors(diesel) piezoelectricdevices pollutioncontroldevices rocketry sci034000bio015000sci013000 science smartmaterials sparkignitionengines technology trucks unitedstates womenscientists