clumsily painted on the rear ; - black and yellow taxis cutely known as bumble bees ; - compressed natural gas-powered , three wheeled , canvas or tin covered auto rickshaws ; - tiny 50 cc bajaj spirit scooters carrying slender indian families of four or more ; - gaudily painted dump trucks seemingly held together with fencing wire and twine ; - black-haired teenage girls in immaculate school uniforms fearlessly riding sidesaddle behind their whippet-thin boyfriends showy , fast swerving , risk-taking , near-suicidal driving ; - ancient russian mopeds with still-working pedals ( for when the fuel runs out ) ; - chinese-made imitation harley davidsonson motorcycles with ape-hanger handlebars inspired by the easy rider movie from 1969 ; - cambodian-styled canvas-roofed and silk-lined motorcycle-drawn ramorks ; - hand and/or donkey-drawn carts ; and ; - bicycles of every shape , make and kind , from sleek 20 speed racing bikes to the heavy black flying pigeon brand chinese bicycles to tricycles , many seriously overloaded with passengers holding anything from huge sheets of plate glass to live chickens and other fresh produce .