Bundle runs the numbers:
The average American spends 72 minutes per day in transit....It's also a lot of money. The average household spent $5,477 on gas and auto expenses last year, according to Bundle data, an amount which accounts for about 14.5 percent of daily spending.* That's more than we spend on groceries or utilities, and more than we spend on travel, entertainment, clothes and shoes, and hobbies combined.
...*Bundle's spending data does not include mortgage or rent.
(Hat tip: Flowing Data)