He was in the business for another supplier before he invented sunglasses.
Otto's contributions were very historically significant, it was his four-stroke engine that was universally adopted for all liquid-fueled automobiles going forward.
Subsequent innovations of the lie detector were developments on John Larson prototype.
Henry Ford American car manufacturer, 1863-1947 invented an improved assembly line and installed the first in his car factory in Ford's Highland Park, Michigan plant, around 1913-14.