What kind of person bills his grandmother for taking her to the supermarket? Jeezz...
Apparently, this is quite common in impoverished areas where the grandmother and lots of relatives may be living
in shared space and the grandmother incapable of driving, but she needs to buy groceries for herself, and possibly
some children whose care has been foisted on her, BUT everyone else does their own shopping.
The kids will bill the parents/GPs for everything, and depending on the circumstance, even
charge their parents rent, or vice-versa.
Keep in mind, there are lots of folks in the world who are below the poverty line in the US, and when
they can't afford to bear the cost on their own to live by themselves, they have a problem of working
out how they will share the costs.
In all fairness, however... gasoline, wear and tear, time and energy are not free.
And by charging their grandmother for transport, it will help them be able to afford the
iPhone 6+ that they need.
It's just that often the kids don't seem to be as helpful as they ought to be, in charging
essentially what a taxi would cost.