I thought the FCD button was to confuse service writers at the dealership!
Here, too, they saw so few of them I was asked several times if it was "electric."Back when my state required inspections, the testing facility had a strict "you must leave the car so we can test it" policy. I always loved watching them search (in vain) for the OBDII port. A couple times in TX they ended up just using the pre-OBDII tester (i.e. tailpipe emissions).