Because there are millions of software updates that will have to be made, schedules to be changed, etc. Will take some time.
Just watch. The IT guys will turn this into another Y2K.
Couple of questions: If we stay on Daylight Savings time all year, what happens to the hour we lost? Do we all just lose an hour of our lives?
Concerning the 9/10ths and gas tax, when will EVs start paying for the roads they drive on? This one is a real issue and the politicians aren't so dumb that they don't know this. They want us to buy the cars first and then will figure out how to tax us.