I assume they're reasonably confident, since they've been doing this for a while, and have ploughed more money/time into this than most others. That, and judgi

I assume they're reasonably confident, since they've been doing this for a while, and have ploughed more money/time into this than most others. That, and judging by Tesla's history - if there was indeed something lacking, they might just retro-fit it for free onto people's cars. So I assume they're keen on getting this right...haha.