This is true - models will go for several years. The question is what are the affects of incremental updates that could affect manufacturing. Similarly, what d

This is true - models will go for several years. The question is what are the affects of incremental updates that could affect manufacturing. Similarly, what does one approach vs the other (toyota vs tesla) have on the boundaries on when large changes in models can be made. If the company must do pre-orders, as the post claims are required for Tesla, it seems that will affect the boundaries for new models vs what is required to fill existing orders. (I assume Tesla wouldn't just ship a user a new model when their previously ordered old model is still in the pipeline)