Victor, think of the car/vehicle as a symbol of the Democratic party.
Hillary is the defacto lead (so far) for the nomination & thus is in the back calling the shots. Her weight has been embellished in order to emphasize her stewardship/power. Hillary's driver, Obama, is also in the running for the Democratic nomination but it is not likely that he will be anything but a spoiler or part of the final nominated team. He may become Hillary's "driver" or VP. A VP is the designated gopher (driver) for the President- funerals for minor dignitaries, celebrations in distant locales, etc. The groceries are almost irrelevant except for the name Walmart which represents globalism run amok to me.
That and mostly the visual in transposing the original actors with these two forerunners in the Democratic promary is what cracked me up.
A chunky, white, female liberal who is driven by her smiling "black" lackey directly to the White House.
The "dream team" for the politically correct & society's disenfranchised.
****.
You took all the humor out of it.