Business Green: In a statement released this week, AT&T said that it plans to invest about $565m (£410m) as part of a long-term strategy to develop a fleet of cars, vans and other vehicles based on compressed natural gas (CNG) and hybrid electric engines. The company claims that the announcement is the biggest US corporate commitment to CNG to date and that by 2019 it will have some 15,000 vehicles using petrol alternatives. “AT&T and other US corporations have a unique opportunity to …