Their largest revenue source (about 85% of total revenue) is fuel (brand name is "Petro"), so this is their largest CGS expense. Needless to say, gross profit is shrinking. Cash ratio's are not terrible, but have declined when compared to 12/31/07.
About 20% of the travel center locations are franchises. There are a laundry of legal contingencies as of 3/31/08. Interesting to read, some are of the class action variety. Plenty of litigation/legal expenses.