I have a 2010 Honda crv. Had the brakes done about 6 months ago by a reputable mechanic. Yesterday while driving home there was some vibration in the front and by the time I got home (20 minutes) I could smell the brakes. They were REALLY hot, to the point I threw some snow on the rotor and it instantly vaporized. This was true of both the driver and passenger side. I've never had anything like that happen before. What would the likely cause be?