I met with the Tesla recommended electrican in my region and he said I needed to upgrade my panel in order to accommodate the NEMA-1450. I sought a second opinion from a different electrician and he said no need, my current setup would be just fine. I could use mini breakers to gain more space. It's a 200a breaker. Attached is the photo of the current panel. Ideally if I don't have to spend $3K to upgrade a panel that would be great, but I also don't want to not be equipped to handle the charge of the M3. Anyone have any good insight on panels?