Although as a bit of an example, I'm currently living off approximately 12K a year, with my expenses coming in at somewhere around 11K. Which means that even if I can only find a McJob I'd have roughly 9K extra, although that is before calculating in the additions of taxes and such.
You could probably find a decent used car and cheap driving lessons on that if you don't go too crazy with extra spending. And he doesn't have anywhere near the expenses I do.
Because SELF SUFFICIENCY!
/masturbates loudly