Birstall Motor Cycle Activity Centre BUMPY Ltd, based at Birstall, are the first organisation in Yorkshire to adopt a green policy within their extensive training facilities. As part of their strategy of reducing their carbon footprint Bumpy Ltd are looking to the future by introducing to their fleet of training vehicles, both off road and on road, electric powered, by batteries. Initially two off road trials machines manufactured by Mecatecno have been purchased to complement the trials machines.