For the life I've had this car (91 weeks), I've put on over 60000 miles.
That equates to 659.3 miles per week. At 25MPG and an average of $1.75/gallon (which is a low guestimation by the way, I'm sure it averages to closer to $2.00 a gallon), that comes out to $46.15 per week in gasoline, or $4,199.74 over the course of 91 weeks.
Most of that was because I had a girlfriend who lived in San Francisco, about 60 miles away from me.
Now that I dumped her, I drive about 350 miles per week, about 200 commuting and another 150 on the weekends.
At 25MPG that comes out to around $29.40 a week in gasoline - at an average of $2.10 a gallon (which is probably the average it's been over the last month and a half here), or over the course of the next 91 weeks $2,675.4
Moral of the story? Don't get a girlfriend who lives 60 miles from you and doesn't have a car.