In a twitter chat yesterday, Elon was answering questions from twits like me
@elonmusk Any tech developed by Tesla used by @SpaceX or vice versa? #APSpaceChat
His reply was:
SpaceX is great at making things very light and Tesla is very good at mass production.
I don't know why most of is replies from this little space chat are gone...
At first, it seemed like a non-answer to me but when i think about it, is he telling us Tesla is helping SpaceX with mass-production and SpaceX is helping Tesla making lighter batteries and other components?