The Tuk Tuk Factory, based in Amsterdam, has signed a licensing agreement with Denver-based eTuk USA to allow the company to manufacture and sell an electric version of the vehicle. The company's founders hope the eco-friendly vehicles, a far cry from the loud, pollution-spewing versions common in Asia and South America, will become the next hip mode of transportation for urban dwellers and tourists across the country. [...] it seems like Colorado's legislature agrees. Because the tuk-tuks are classified as motorcycles by the U.S.