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When collecting data from cars things get easily complicated. Cars are owned, driven by different individuals but the data is personally relatable to the owner of the car. So the use cases need to consider all possible permutations of the actors in the system, related to their produced data. The following figure displays the relations between the parties. This figure can be extended in the future to reflect more possible use cases.

uml diagram

Furthermore for a professionla professional environment of exchanging data you need to consider the following as well:

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