SIVA deploys 130 natural gas buses, Colombia November 1, 2022 | Latin America News, News Integrated Transport System of Valledupar (SIVA SAS) has added 130 natural gas Marcopolo buses to its fleet. The buses were procured at an investment of COP44,500 million. The buses have a capacity fo... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password