What are peoples thoughts on the Market value of a used model 3 6-18 Months after first ones are delivered. Think of a scenario where someone who was early reservation holder, purchases one of the first cars regardless of options. Then 6-18 months later there are more options(AWD, Battery etc). They decide to sell that original car and upgrade. Does the value hold due to demand? Does it diminish quicker do to "outdated" version? Thoughts?