According to the latest information. Tesla has stopped buying cars with bitcoin. Billionaire Elon Musk announced on Twitter that Tesla officially "suspended buying cars with Bitcoin" because of concerns that Bitcoin mining is adversely affecting the environment. This has had a huge impact on the bitcoin market.
That's their way to manipulate the price.. you can ask yourself, they are a big company, a successful one and you think they didn't know that in the first place? They are trying to make people look stupid here, so they can make easy money.