DETROIT - It what it describes as an industry first, Honda Motor Co. is offering a natural gas vehicle with its own home refueling machine at dealerships in California. Honda said Thursday it has been offering its Honda Civic GX sedan to fleet operators for seven years, and estimates there are 7,000 of the natural gas-powered vehicles on the road. But this will be the first time consumers can buy the vehicle in a dealership and lease a refueling machine to go along with it. "Driving a natural gas vehicle has never been so convenient," said Gunnar Lindstrom, Honda's manager...