I think to be fair, if you’re going to include labor costs in the “total cost” of a car, you should include the price of a skilled bicycle mechanic in the cost of a bicycle, just to compare apples to apples.
IMO not enough people have the know how to fix their own cars. And I am surprised that this is not changing given 1. how ridiculous the price of auto mechanic labor has gotten and 2. the wide availability of DIY info on YouTube. Even just basic, basic stuff. I have friends who take their ~5yo cars to a mechanic (or worse: the dealer’s service dept) for routine maintenance like lubrication and filter changes, and they fork over $1500 for this! We are talking about $150 in parts and consumables here. The mechanic inflates this to $500 and then charged $1000 for his labor.