In the world of automatics, Allison Transmission has pull. The company builds automatic transmissions for medium- and heavy-duty commercial vehicles and hybrid-propulsion systems for city buses. Allison's customers include OEMs of garbage trucks and city transit buses, military transports, and dump trucks. The company also makes electric drives for buses and shuttles (it is the world's #1 heavy-duty hybrid producer), and remanufactures transmissions for aftermarket customers. The US accounts for nearly 75% of its total revenues. Allison serves customers in Europe, Asia, South America, and Africa in more than 80 countries.