If you're looking to get around during A3C, there's no better way to do it than through Uber. Uber is your on demand private driver.
As a special deal for A3C 2012, Uber is offering 4 free rides to or from the Masquerade. Just download the Uber app from the AppStore on your iPhone or Google Play on your Android and setup and account. Enter the promo code UberA3C and request a ride.