(Bloomberg) -- Tesla Inc. unveiled the first refresh of its popular Model 3 sedan with a sleeker look and longer range, and slashed the price of its premium cars in the US and China in an all-out push by Chief Executive Officer Elon Musk to boost sales. Most Read from BloombergHong Kong Shuts Down City Before Super Typhoon Saola HitsFake Spare Parts Were Supplied to Fix Top-Selling Jet EnginePutin Moves to Seize Control of Wagner’s Mercenary EmpireEurope's Biggest Oil Company Quietly Shelves a R