New apps make it easier to use DC-area toll lanes, but no free rides for carpoolers

The practice of using an electronic E-ZPass transponder mounted to your windshield to sail past toll booths is so antiquated. New cell phone appl now allow drivers to use their license plates, instead of an E-ZPass transponder, to use the toll lanes on Interstate 95, 395, and 495. Drivers can use a phone app to link their license plate to a credit card…