What three wheeled vehicle operates as a taxi in Manhattan? Pedicabs are seen in high tourist areas in the city.

I usually see pedicabs with 2 adult passengers, but a website mentions they can carry up to three. The price seems to be by the ride, not by the number of people. Some advertise they charge 5-9 dollars a minute, meanwhile a website for one company states that they charge $40 dollars for a one hour tour of Central Park and they book through their website. They have to disclose the cost prior to the ride. Have you ever ridden in a pedicab?