In case you missed it, Newsweek did a tally on the number of cars owned by the two candidates and their spouses: McCains 13, Obamas 1.
So if John McCain owns at least 13 cars.
The average car's gas tank holds about 15 gallons.
The average cost of a gallon of gas in the United States is $3.76.
It would cost John McCain $733.20 to fill up his fleet of 13 cars - just once.
Just by way of comparison, the average monthly rent in the US is $766.