Buses, Coaches.

Even in the light of the recent coach crash in a Swiss road tunnel, very sad as it is. This is probably one of the most successful of human inventions. Buses are used world-wide and are to be found in all sorts of places cold and hot, wet and dry. Despite the many accidents that occur on mountain roads, they are still the best and cheapest way to travel from A to B. One of the latest inventions for the bus is the sliding side way Volvo coach. Much easier to park in urban environs, but still too expensive for many.  We today still have double decker's and now the bendy bus, love or hate it. but in eastern Europe there remains the trolley buses. What is the future I wonder in this century for the coach, bus?