I think it's because it's the date the car was designed. It had to have the option of DRL in 2011 and now it's compulsory. It looks like we are another Nanny State.
Personally, more and more cars will have them as newer cars appear on the road and I can't see mine from my drivers seat!! I'm more interested in what happens on the inside of the car and how it goes when I put my right foot to the floor
