wrong answer, dude
This article about Washington-area commuters who lurk near the high occupancy vehicle (HOV) lanes to hop on as soon as they are open to driver-only cars was interesting.
It also mentions that soon, I-395's HOV lanes will become toll roads, 24-hours. One commuter, a guy called Scott Digilio who uses the HOV lanes a 9:01 AM, shrugs at the prospect. He says, "The government will pay the tolls, I guess."
Wrong answer. Many federal agencies and down-town businesses subsidize employees' bus and subway costs - a good idea. But paying Digilio's tolls, and others', would be dumb. Don't do it!