A project to test driverless vehicles that launched Wednesday in the U.K. has brought focus on safety, insurance and regulatory issues. The U.K. project will conduct trials of driverless shuttle cars in London’s Greenwich borough and in Bristol. The government will study public reaction and related legal and insurance aspects. John Vincent Cable, the British secretary of state for business, has said he expects driverless vehicles to become a £900 billion ( .4 trillion) industry over the next decade. Driverless vehicles will certainly become reality, but not any day soon, said Wharton management professor John Paul MacDuffie . “The auto industry is over 100 years old,”he said. “[The introduction of driverless vehicles] is probably the biggest set of changes since the 1920s.” MacDuffie discussed the technology on the Knowledge at Wharton show on Wharton Business Radio on SiriusXM channel 111 .…