Shell unveiled an energy efficient petrol-burning concept car capable of averaging an impressive 89 miles per gallon which it believes could be a practical solution to driving in modern cities.\r\n\r\nThe oil giant\u2019s \u2018Project M\u2019 three-seater lightweight concept city car is based on Gordon Murray Design\u2019s T.25 city car.\r\n\r\nF1\u2122 designer Gordon Murray, engine experts Geo Technology and Shell scientists collaborated to co-engineer the vehicle\u2019s body, engine and lubricant to minimise fuel use and CO2 emissions.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nAccording to Shell, \u201cthe result is a concept car that uses significantly less energy from its manufacture to the end of its life.\u201d\r\n\r\n\u201cYou could build this car and drive it for around 100,000 kilometres before consuming the same energy it takes to make a typical SUV,\u201d says engineer Bob Mainwaring, Shell\u2019s Technology Manager for Innovation, who is leading the project.\r\n\r\n"We used our expertise with leading edge products like Shell Helix to create an efficient lubricant which works perfectly in harmony with the engine."\r\n\r\n\r\n\r\nThe car has a top speed of 110 kilometres per hour (km\/h) but performs best at 50-70km\/h. Independent tests revealed that the car emits at least one quarter less carbon dioxide than typical petrol-powered city and hybrid cars.\r\n\r\nAs the vehicle is made of recycled carbon fibre (weighing only 550kg), manufacturing the car requires up to 45% less energy compared to a \u201ccity car available today\u201d.\r\n\r\n\u201cThe lower weight and the aerodynamic improvement has been a significant factor in increasing the efficiency. So has the engine lubricant collaboration between Shell and Geo Technology. By working together we\u2019ve achieved far more than we could have done on our own,\u201d said Matt Brewerton, the lead project design engineer at GMD.\r\n\r\nShell itself has no plans to put the concept car into commercial production.