The cheapest trip between Boston and NYC is the Chinatown bus, fare go as low a $10 one way a couple of years ago. It's still cheaper than the Hound, Trailways, Amtrak, or flying. Fung Wah has been running for at least ten years that I know of.
According to the Wall St Journal, the Massachusetts authorities have petitioned the Federal Motor Carrier Safety Administration to take 21 of Fung Wah's 28 buses off the road for cracked frames. The Feds obliged by shutting down all 28 Fung Wah buses.
Fung Wah says service is continuing using chartered buses.
Someone made the right campaign contributions. Or failed to make them.