Shortly after 4:00 AM, Sunday, San Jose FD responded to reports of a car fire on Sierra Rd, East into the hills from Piedmont. Initial responding units arrived to find a fully involved car, which had spread into the brush. A full Tier response was dispatched by SJFD, and 3 engines, along with a water tender got control of the bulk of the fire in approximately 20 minutes. According to the Battalion Chief, the fire was contained to approximately 2 acres of brush. Cause of the fire is under investigation, as no parties were with the vehicle when firefighters arrived. The fire is 1 canyon to the North of where the 100 acre brush fire originated earlier this week. Contact SJFD for more details.