[rich-w-big-ego]

Elon used the same over-promising strategy during the build-up to the start of Model 3 production. Elon promised that Tesla would start producing Model 3s in July 2017, noting that production would not actually start until sometime later; since some supplier somewhere would mess up and miss the deadline (and have themselves fired), they would inevitably be delayed. It's the same thing in this case: promise really aggressively, and be serious about the promise, but understand that Tesla will be delayed by the least lucky, least effective part of the team/production line. This way, Tesla can be aggressive, even though if you go by their promises, they should be _really_ aggressive.