Considering software like that will always need further development, I'm not objecting to have it as an optional subscription and the price sounds reasonable to me. I would use it. Not for every small trip to the store, but for longer trips definitely.
That being said I think this would lead to more hardware, not just software, being locked behind subscriptions - as the article already mentions battery range/performance subscription. Simply because the companies are greedy. That's something that I would refuse to pay for via subscription.