Several taxi cab companies in Arlington, turned hybrids in the year 2007. Around fifty arlington ma cabs were turned hybrids as part of a program to introduce new methods towards a safe and secure environment. Hybrid cars run on duel fuel. One of the primary criticisms against hybrids is that it is comparatively slow with respect to other cars. However, the traffic congestion in the street is increasing day by day. Hence hybrids will be the perfect way to ride through such slow roads. In addition to the fifty hybrid vehicle which was introduced by the government, thirty five hybrid taxis where also unveiled by Arlington in the year 2007. They named these as green taxis. The movement was part of an initiative to instill pure, fresh air in the streets. The government aimed to reduce emissions by vehicle. By bringing in thirty five green taxis, the government took to right step to fight against global warming.