If there are nearly 340 trolley buses still operating worldwide from one continent to another, it means that as a silent transportation system, it is still efficient and cost effective public and government. For busy city streets, it seems to be a smooth ride, despite ugly overhead wires which interrupt the view of the unlimited sky. Well, you can’t have your cake and eat it too! In the past there were over 500 trolley bus systems working up the hill. But the advent of oil and diesel made it a lesser used form of commuting. The pollution, high oil prices have turned the clock back. European and American cities are using these smooth and silent commuting mammoths. They look sleeker, and are also eco-effective and eco-friendly, snaking their way around metropolitan tarmac roads. …….