Grease Is Good 2.57K Hamilton Nolan 10/30/09 09:45AM Filed to: and now he's dead and now he's dead Obits Fast Food trendwatch Sonic Health the olds Amazing but true Troy Smith, founder of the Sonic Drive-in chain, died this week at the age of 87. He's at least the sixth fast food mogul to die of extraordinarily old age in the past two years. One cup of grease, please.