Prom-goers may prefer limos, but grown-ups who\'ve really made it arrive in style in Gulfstream Aerospace jets. The General Dynamics subsidiary is the second-largest maker of private jets in the world, just behind Bombardier. Gulfstream manufactures intercontinental business aircraft used to transport executives, rich dudes, and government heads of state. To help market its new aircraft, the company\'s Gulfstream Financial Services unit helps arrange financing. Gulfstream also provides aftermarket maintenance services and sells used Gulfstream aircraft.