Today marks nine years of Franktuary owning a food truck. As I look back, I fondly recall our original model, known to many as Grumps. A converted 1988 postal truck we bought in 2010 that had to have a full engine replacement before the year was out, Grumps proved to be a good business decision in the long run and sparked a food truck movement in Pittsburgh. Little known fact: Grumps had a jet pack.