Musk this week while being interviewed claimed “Bitcoin’s structure is quite brilliant, but it would not be a good use of Tesla resources to get involved in crypto”

Musk knows a thing or two about money transfers, having been a leading light at PayPal, so he is better placed than most to understand the costs and limitations that traditional payments systems face. Musk also said, “Paper money is going away and crypto is a much better value for a transfer of value than pieces of paper, but, it's very energy intensive to create bitcoin at this point."

Elon Musk, while controversial, has a keen eye for disrupting industries: look at what he has done with solar power, launching satellites and of course electric cars, so it is unlikely to ignore Blockchain technology...
https://www.youtube.com/watch?v=fKeK68wK0UQ