Uber is using a tax 'loophole' to make its rides cheaper

The mass transit I took to Brooklyn the other night came in the form of a gray Toyota minivan.
It sure didn't feel like mass transit: My colleague and I filled the middle row, and for most of the rush-hour journey crawling over torn-up Greenwich Village streets and then coasting across the Manhattan Bridge, it was just the two of us with the driver and four empty seats.
Comfortable, but hardly efficient.
I was in an UberPool, the ride-hailing company's service that picks up passengers heading in