Well, methods are now documented but implementing them doesn't result in any electric vehicle options showing up in Maps.
The user guide suggests I should see these options here: https://support.apple.com/en-gb/guide/iphone/iphc5e3a4b4b/ios
I've run out of options this point and I'm going to use a Developer Technical Support ticket to find out more. I can only assume that you either need special permissions or that the feature is not yet enabled.
Topic:
App & System Services
SubTopic:
General
Tags: