HYBRID TAXIS - Ford Motor Company introduced a mini-fleet of hybrid-taxi cabs to serve New York. HYBRID TAXI IN UK TRIALS - Azure Dynamics made a hybrid fuel vehicle that can automatically switch between power sources to ensure the most correct balance of fuel efficiency and performance. UK DRIVERLESS TAXIS - The Ultra Personal Rapid Transport (PRT) system is billed as the most innovative way of moving people around airports, towns and even shopping centers. DEVELOPING GREENER VEHICLES ENGINES - Scientists at the University of Bath are looking at reducing greenhouse emissions from diesel engines by looking at heat flow within the engine. GREEN PLANE - A 'silent plane' has been invented to reduce noise to people living under flight paths. BRITISH STRATO-PLANE - A British scientist created a plane named 'zephyr'; it's a low-cost plane used to collect photographic image data in space. BOLIVIA BOAT - A 40-foot-long, 6-ton raft made of bulrushes that is able to sail across oceans. LOLLY VIKING BOAT - Rob McDonald's 50-foot Viking ship, built by using millions of recycled ice cream sticks. ADVENTURER - Japanese adventurer Kenichi Horie announced a new voyage using a boat that is powered only by waves