Investment mogul Warren Buffett, who in 1989 named his Bombardier Challenger 600 “The Indefensible” but later renamed the jet “The Indispensable” still believes that aircraft are valuable business tools even in light of the current economy. During a wide-ranging interview last month on CNBC, Buffett was asked how he felt about President Obama “openly criticizing the use of corporate jets by CEOs.” He replied, “Berkshire has been better off by me having a plane available to go and do deals or whatever it may be. We have done things I wouldn’t have done if we hadn’t had a plane. And I think it’s…a big mistake to start demonizing anybody in this game.