Quite a few reasons but primarily CarPlay doesn't know about your vehicle's charge and road trip navigation requires external inputs to determine your charge route.
Apple could potentially offer an API to have "reverse" CarPlay where the car's app can feed information into iOS. I recently rented an Mercedes EV which had Apple CarPlay and it was a weird experience having to manage two sets of experiences.
Manufacturers should be required to expose an agreed upon spec API that provides range estimate, battery state, etc. So CarPlay and other apps can access the info in a standardized way
Apple holds up their end of the deal by supporting the EV Routing feature in maps. It’s entirely up to manufacturers to expose the information at this point.
100%. I've owned Teslas since 2017 and always found the infotainment to be very good. Though I've really preferred Apple Maps routing recently. The descriptions of when to turn are much more human.
Apple could potentially offer an API to have "reverse" CarPlay where the car's app can feed information into iOS. I recently rented an Mercedes EV which had Apple CarPlay and it was a weird experience having to manage two sets of experiences.