In German they say "was kümmert mich mein Geschwätz von gestern?" - What do I care about my yesterday's chatter? Elon Musk is - surprisingly - still famous for such behavior although he has been loosing in popularity for sure.
His u-turn on Lidar is in particular interesting to us as four years ago at our "Silicon Valley meets Switzerland" event the then-CEO of Quanenergy said that Tesla is the only EV maker not using Lidar.