Air traffic into Sacramento International Airport was diverted for more than an hour after the discovery of a pickup truck on County Road 124 that was thought to contain explosives.
Yolo County Sheriff's Deputies responded to a medical call Tuesday and found a man lying in the roadway.
They also noticed the pickup with wires coming from a device into the gas tank.
The area was cordoned off while the bomb squad checked it out and determined that there were no explosives.
The man was taken to a nearby hospital for observation.