The American car-maker General Motors and Lyft Incorporated, a ride-sharing service, reportedly will start testing GM automobiles as driverless taxis. The Wall Street Journal says the companies could be offering service “within a year.” The newspaper said the tests will involve GM’s electric-powered Chevrolet Bolt. But it did not say where the first test will take place. GM has reportedly invested $500 million in Lyft Inc. The partnership is seen as a way to compete against Uber, another ride-sharing company. GM also is planning to buy Cruise Automation Inc. for a reported $1 billion. The California-based company has been developing self-driving car technology for two years, the newspaper reported. The move is seen as a way for the automaker to sell the Bolt. It will be available later this year in a market for electric cars that the Journal described as “soft.”