The singer-songwriter best known for writing and performing the 1969 hit song "Spirit in the Sky" remained in a hospital Monday, two days after he was hurt in a car crash north of San Francisco that left a motorcyclist dead, according to the California Highway Patrol. Norman Greenbaum, 72, was brought to Santa Rosa Memorial Hospital in critical condition after the car he was a passenger in collided with a motorcycle, according to a statement from the California Highway Patrol (CHP