507440 story Reaction Engines plan Mach 5 Airliner 221 Posted by CmdrTaco on Wednesday February 06, 2008 @12:46PM from the not-very-likely dept. What is? writes "A British company has designed an eco-friendly airliner that could make a trip from London to Sydney in under five hours. Reaction Engines has received funding from the European Space Agency to design the plane as part of the Long-Term Advanced Propulsion Concepts and Technologies project. The A2 airliner would be capable of carrying 300 passengers at speeds of up to Mach 5."