I was driving from Sandyford to Dundrum at 9.20am today and noticed a car approaching from behind at high speed I would guess around 80mph on the road adjacent to the m50. He than undertook me as we approached the roundabout.I noticed it was a brand new blue 318 with trade plates he than pulled out onto the roundabout in front of a car and went side ways around the roundabout.now I'm no expert but is he majorly taking the piss with somebody's new car I always thought you were supposed to take it easy in a new car for 500/1000 miles to avoid any damage and allow everything to bed in.