Elon was visibly pissed and flustered. No way it was planned. But it ended up being a positive, IMO, since it got way more attention to the CyberTruck. I doubt people really care about their windows being vulnerable to steel balls, since that’s what they’re used to, but I’m sure they’ve also seen the footage of Hanz hitting the car with the sledge with no damage and they got eyes on the truck itself.