My understanding was that you could have a button that could take the user outside of the app to pay (i.e. your website). So progress, but not this level of freedom yet.
I'm no expert, but from a quick Google search that looks to be twice the median income for a mechanic. If they can't find workers at that income level, it seems to me that they are either filtering based on another criteria (more than just trade school, as the article suggests) or Ford must be such an awful place to work that nobody applies.
I can appreciate the totally different perspective that must bring. I would also add that living in a car-centered society where you are expected to have a car presents its own set of challenges, namely that you can't afford to live near food sources (grocery stores, etc.) or jobs because it's expected that people drive to those things. For people in those situations struggling to make ends meet, I think they view their car more as a required liability they struggle to maintain rather than a privilege.