BestParking.com is a free site that allows you to search and compare all daily and monthly parking rates and locations in NYC, Philly, Boston, and DC, with more cities coming soon. Free daily reservations and rate guarantees can be booked at 350 of Manhattan's 1030 parking facilities. Companies offering reservations and rate guarantees include Central Parking System of New York, Icon Parking Systems, Edison ParkFast, The Hertz Corporation, Five Star Parking, and Townhouse Management. For monthly parking, motorists can request that the above companies compete for their business with customized bids. A mobile version of the service is available at mobile.bestparking.com. There is an enormous variation in rates among neighboring parking facilities; BestParking.com’s users have reported saving thousands of dollars each year in parking fees. BestParking provides transparency in parking, eliminating asymmetric information and increasing market efficiency. Furthermore, a study by Transportation Alternatives "estimates that circling for a space in Manhattan burns $130,000 a year in gas - not to mention about 50,000 hours of the drivers' time. And the resulting emissions hurt the environment."