If you drive to work every day, you know the stress and costs of commuting all too well, but perhaps you only have a vague notion of cheaper alternatives other than public transportation.

A new NerdWallet data analysis of the nation’s 20 largest metro areas by population found that commuters in eight cities could save a significant amount of money by using Uber to get to work.

Compared with driving and owning a personal vehicle and the weekly costs — including car insurance, gas, parking and wear-and-tear — using Uber can save money for commuters in the metro areas of Chicago, Detroit, Los Angeles, Miami, New York, San Diego, San Francisco and Washington D.C.

In some cases, the savings for Uber commuters are dramatic. Commuters in the San Francisco metro area, for example, could save $83 a week by opting to use Uber on the driving path we analyzed. In the New York metro area, commuters could save $76 each week, and in the Chicago area, picking Uber would mean a weekly savings of $39, according to the analysis.

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