The fuel line became disconnected from the top of the fuel pump and fuel leaked onto the asphalt. . this happened while the car was parked in a parking lot. it was repaired by the dealer who found that the connection point of the fuel line on the "top hat"had opened and that the top hat was damaged. this connection is at the top of the fuel tank and was never serviced, it appears that the.connection failed due the polymer material deteriorating and cracking.