So, having registered my interest in eventually upgrading to a 100kWh battery, I finally received a call from Tesla over the Easter holiday. They said it was not "technically possible to upgrade my P90D (2016)" to a 100kWh battery. I'm thinking bullsh*t on that comment... they said someone else would call back to discuss the residual value on my AP1 P90D so that I could purchase a new AP2 100D. I'm pretty sure the depreciation that they're going to mention is steep, so this is likely a non-starter. But how could this be "technically not possible"? I have air shocks, so I doubt that a heavier pack is the issue. Smells like marketing to me.... Comments?