I was stunned by the effectiveness of it on my van. I’m now a fan. A few months ago, a car did a stupid manoeuvre and caused another car in front of me to do an emergency stop. It was dusk and starting to rain. I was accelerating, too, as it all happened. Before I could move my foot off the accelerator and onto the brake my van reacted. Alarms went off, the seatbelts tensioned (pulling my ten year old daughter and myself back into the seats) and the van just stopped on a sixpence. It aldo seemed to straighten the steering wheel - but that might just have been the result of the braking and gyroscopic forces. I might have stopped in time without the computer taking control but it would have been a close run thing. Overall, I was very impressed.