I was trying to get my seats out to detail the car and and to clean up my carpet. In the process I managed to break two bolts on the driver side, got on bolt out with out a problem, and one is stuck. I soaked all 4 in liquid wrench before trying to take them out. My question is how do I remove the broken bolt out of the car now? I heard drilling will take forever, and vise grips may not work. Any ideas????