Jack Lusk is neatly dressed, polite, enthusiastic, drives carefully and speaks English. So what's he doing behind the wheel of a New York cab?

The new 37-year-old chief of the city's Taxi and Limousine Commission is moonlighting as a driver in hopes of setting new standards for courtesy and reminding drivers that hacking is a service industry."The riders have been terrific," Lusk said. "If you give people a good, quality ride, they will pay for it."

Lusk was unfailingly polite and cheerful and tried to make eye contact with each passenger. Everyone got a warm hello and he repeated the destination to confirm it.

"Do you need some help getting in?" he asked solicitously of an elderly woman struggling to seat herself. Before she answered, he flung open his door and sprinted around the cab to close the door for her.

Wearing a yellow button-down shirt and camel V-neck sweater, Lusk winced at the suggestion he's a good deal more clean-cut than the typical taxi driver.

"I'd like the whole industry to be clean-cut," said Lusk, whose regulates about 35,000 drivers and 12,000 vehicles.