I have a 16, Gen 2. Today I had a Cruze pass me on the interstate, same color, LT rims. I noticed it had blind spot monitoring in the mirror. I see some generic, non specific information on the Chevrolet website about safety tech. I can not find it when I try and build a 2017. Is it new on the 2018? On the Chevy website, it shows it's optional, but I don't see it when I try to build it.