A farm worker was injured in salinas this morning, after crashing his tractor into some parked cars. the victim was airlifted out of the county for treatment, following the 11 a.m. incident, which occurred in a field at abbott street and harris road. There were no other injuries. The accident is under investigation, but it is believed that the man had a pre-existing medical condition, which might have contributed to his losing control of the tractor.