tomy
Member
Engineering anything for production is a very labor and time intensive thing. Hammering out a prototype in the lab is one thing, but getting that prototype to production can take longer than it took to make the prototype. That's why many concept cars never make it to production. The design guys make a one off prototype that wows people at car shows, but when management looks at the cost/benefit of converting the concept into a production car, it often isn't worth it.
Agree, my guess also would be that rather smaller changes will be seen over time.
Other question would be more about the timing and the publicity and media attention that goes with it. Assuming that Model 3 gets revealed in March, than either you would see something Jan/Feb or May and onwards. Announcing both in March to me is rather unlikely.