The United States and the European Union have signed up to a new transatlantic economic partnership at a summit in Washington. The pact is designed to boost trade and investment by harmonising regulatory standards, laying the basis for a US-EU single market. The two sides agreed to set up an economic council" to push ahead with regulatory convergence in nearly 40 areas, including intellectual property, financial services, business takeovers and the motor industry. The aim is to increase trade and lower costs. Some reports suggest that incompatible regulations in the world's two richest regions add 10% to the cost of developing and producing new cars.