I would certainly be arguing the case based on eg "What identifies an individual could be as simple as a name or a number or could include other identifiers such as an IP address or a cookie identifier, or other factors.". Indirect identification can still make it personal information "If you cannot directly identify an individual from that information, then you need to consider whether the individual is still identifiable. You should take into account the information you are processing together with all the means reasonably likely to be used by either you or any other person to identify that individual."
The debate could be "Even if an individual is identified or identifiable, directly or indirectly, from the data you are processing, it is not personal data unless it ‘relates to’ the individual." and one could argue that much of the data relates to the instructions you werte giving to the vehhicle (eg accelerator, brake, steering, etc., inputs from you).
But then on privacy I'll often pursue cases further than many would eg I'm still pursuing a significant retailer for passing some details about a purchase to a 3rd party for marketing purposes despite my not agreeing to it.
Ian