The model X was delayed a few years, and Elon mentioned a 'OCD on details of a product', so this is a fair question to ask.
My best guess would be that mid 2018 first deliveries would still be manageable, but not much longer. And that is for financial reasons, not due to competition (on the competition front they have more time).
My best guess would be that mid 2018 first deliveries would still be manageable, but not much longer. And that is for financial reasons, not due to competition (on the competition front they have more time).