Afay1 brings up an interesting point: airlines as well as aircraft and automobile manufacturers have always been linked. General Motors once controlled Curtiss-Wright as well as TWA and Eastern airlines. GM later manufactured Allison turbine engines used in Convair 580s. Ford, of coarse, started one of the first passenger airlines in the U.S. and made the famous Trimotor airliner. American Airlines was once controlled by E. L. Cord of Auburn-Cord-Duesenberg fame. Commercial aircraft engines have been made by Rolls Royce, BMW, Maybach, Lycoming and others. Harley Earl, one of the most famous auto stylists of all time, designed Eastern's DC-7B interiors as well as Convair's 880. Beech promoted it's Plainsman luxury car after World War II but never put it into production. Franklin found more success in helicopter engines than in its air-cooled cars. I'm sure there are a lot more links.
I work for Southwest, but the views expressed are my own and do not necessarily represent those of Southwest.