Firefighters in Bucks County had their hands full with a blaze at a rancher on Friday.   The fire on California Road started in a car that was parked in the garage.   The homeowners had just parked it after returning from grocery shopping.   They noticed smoke in the house and went back out into the garage only to find the front of their car engulfed in flames.   No one was hurt dousing the flames but the garage was destroyed and a rear family room sustained heavy damage.