(1) They can't port over the gaming engine used for the Buggy game over to MCU/1 as it runs a non Intel based processor. Ain't going to happen, sorry.
(2) There is nothing like MCU/3. There is a lot of speculation that the refresh Model S and Model X later on this year may have an updated MCU/3, but right now there is only MCU/2 and MCU/1. Don't confuse MCU and FSD computer (aka AP2/2.5/3), as they are two separate things. One is the larger touch screen, the other is the Auto Pilot computer. (aka FSD Computer).
There was talk of a MCU/1 to MCU/2 upgrade that Elon mentioned may one day come, but we are all waiting over 15 months so far, and nothing has occurred. Also expect the MCU/2 retrofit to come in over $2K as the replacement MCU/1 out of warranty is already that expensive.
Elon MCU/2 Retrofit Tweet =
Elon Musk on Twitter
Cost of MCU/1 replacement out of warranty.
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