I bought a car last night, took it for a test drive for about 20 mins, tried to do diffirent things, all was brilliant, so handed over my cash and off I went. On the motorway all of a sudden the ABS and Brake System light illuminated and all power drained out the car, I pulled over, left it for a minute, started it up again, and it ran fine, 10 miles down the road it happened again. Any ideas. It's a Rover 45 2003 plate.