Draco Dei
In contrast to the sister image, this makes a lot more sense. Her father may have taught her at least the basics, and she certainly works with assembling things enough thst it might translate. Come to that she might never do anything with the stuff under the hood or that one might want a jack for(?). Swapping out body panels (or at least doing airbrush work), dashboards, seats, etc to create different looks…ACTUALLY that I could EASILY see an instance of Rarity doing as a career instead of clothing.