More a replacement brain for an EV. Compared to an ICE there is far less to manage in a hyper time critical manner. It’s a lot more viable to design a drop in replacement. Particularly if the battery bank already has its own monitoring, that just reports upwards.

You would end up with a modern EV, with many of the desired features. However, the manufacturer would no longer be able to reach in and extract data, either remotely, at a mechanic, or after an accident.