Remember the robot arm autocharging? Remember him saying they would have full autonomy and robotaxis in 2020? Then 2022? Now 2027? Remember when he got beat to autonomous taxis by Waymo? How about the Boring company? I can give you a dozen more outlandish claims.
There will be some type of inductive charging, there will be some type of auto cleaning. But it won't "always be charged" and it won't "always be clean". It's the hyperbole and the crazy dates. And he even made fun of himself for his missed predictions at the event.