1. Rolls-Royce’s battery play Rolls-Royce will make its own battery-powered ship engines. Branded SAVe Energy, the new system will be produced at the Rolls-Royce Power Electric site in Bergen, Norway. The move signals a push towards hybrid and electric vessels. The company has been delivering energy storage systems since 2010 but the actual energy storage units were previously supplied by an external party.

2. Paying the price Net revenue at Uber rose quicker than gross bookings in the quarter to June as the company dialled back on promotional subsidies of rides. Under the leadership of Dara Khosrowshahi, who became CEO in September, the company is pouring more cash into new services such as bike sharing and Uber Eats...

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