A fuel leak and an overheated truck engine made a warm spring day even warmer for Salt Lake County firefighters who had to put the flames out when this truck and its cargo of lumber caught fire on I-80 near the Parleys Canyon summit at about 4 p.m. Wednesday. The truck, which was headed east, was a total loss, Utah Highway Patrol Lt. Verdi White II said. A few minutes later, three semitrailer trucks in the westbound lanes of the highway collided, causing a messy accident and a traffic jam, White said.