Owning a car in NYC means maintaining a maddening vigilance about when you need to move the thing to the other side of the street for the pointless street "sweeping" ritual. The City Council is considering ways to make it easier, but for now motorists are still trapped in an existential struggle for available space. The worst part is the not knowing—once you've pulled your car out of that coveted parking spot, where the hell are you supposed to put it? THE MOON?

According to the new website Street Parker, a study by Transportation Alternatives suggests that "during some parts of the week nearly half of all traffic in Park Slope is attributable to people driving around looking for spots." Street Parker tries to take some of the guesswork out of the hunt for parking with an interactive map showing which streets allow free once-a-week parking on particular days.

"I created NYC Street Parker out of frustration with having to move my friends' cars multiple times per week while they were out of town," explains Matthew Petric. His website uses data feeds available from NYC's Department of Transportation, including current suspension status and future street parking holidays.

In creating the map, Petric found determined that "Brooklyn is home the most once-a-week spots (200,000), followed by Queens (150,000), the Bronx (35,000), and Manhattan (10,000)." (Staten Island doesn't have street sweeping regulations, so when all else fails you can try parking there/the moon.) The map features a color-coded legend that lets you sort the data by day of week, and also lets you search by location.