I've had this issue twice now. Both times it's been a loose electrical harness on the suspension. If that's the issue, you can fix it yourself. The first time it happened it was intermittent based on road conditions.
Drove alongside a release candidate yesterday for about 20 minutes. Thought it would look much worse based on all the photos I've seen. I was pleasantly surprised by the appearance and it's smaller than the prototypes, but still longer than the Rivian.