A driver with the ride-sharing service Lyft waits for a customer on a street in Santa Monica

General Motors is investing $500 million in Lyft and has laid out plans to develop an on-demand network of self-driving cars with the ride-sharing se(...)

GM shares rose 3.6 per cent to $31.27, near their initial public offering debut of $33 in the fall of 2010, and hit the highest point since July 2011. Photograph: Reuters

General Motors posted stronger-than-expected quarterly profit yesterday as the US car firm kept a tight grip on costs in its North American and(...)