They also have some sale coming up where you get more storage or extra cores for the same price: https://www.netcup.com/en/deals/easter-sale
Usually these apply permanently.
Find some loophole in their T&C to terminate your account I guess. Similar to how mobile providers don’t like people actually using a lot of bandwidth on their „unlimited“ plans.
Current range would be a must to make it „EV routing“ — and I believe the data flow direction from car to iPhone is not yet fully supported for every model.