Hi I have a strange and dangerous thing happen twice to me. I have a 24 plate Formentor 1.5 dsg V2 450mile on the clock, loaded with brill tech. I was driving on road in the northeast of England A19 the car was set to run fully automatic reading speed signs with acc etc on. Travelling at 70mph no problem until suddenly and without any speed sign warning the car breaks and sets the speed 40mph. Subsequent presses of the resume does nothing, I manually accelerate quickly as I had a lots of vehicles travelling behind me and because of the erratic braking could have caused a serious accident had I not been quick on the accelerator. This stayed at 40mph and displaying the same..for at least 1.5-2miles then again without any speed signs been present the car displayed 70mph which then accelerated back up to 70mph. As I have said this has happened twice on the same road but total different location. I had someone else in the car who confirmed that they was no 40mph road signs. The only thing I can think of is it tide up to the mapping software that has seen prev road works and is not up dated even though I have everything up to date. Very alarming when it happens. Anyone else had any issues like this.