We were travelling on M25 this morning at about 9.30 on the fast lane. Couple of cars before us suddenly slowed down, but the breaks in our car did not work. All I remeber is me shouting at my husband to slow down as I could see us crashing into this convertable blue mazda(not sure about the make). The lady herself was able to break on time and get out of our way by 10 cm...I am still shaking. We were going out for a fun family day and it could have gone soo wrong. We never got a chance to say thank you to her as we had to move out of the motorway all togather, but I have been thinking of that woman all day as I dont think she realised how lucky she was avoiding us at 70ml/h crashing on her back. So whoever you are THANK YOU SO MUCH!!!