GrabTaxi adds Flash button for instant rides, mandatory ratings, e-receipts hub, and business ride tags

Uber’s main Southeast Asia rival, GrabTaxi, on Monday announced a few new features for its ridehailing app, including what it’s calling a ‘Flash’ button that automatically books “the nearest available Standard Taxi or GrabCar Economy” — kind of like a one-click checkout on Amazon. It says Flash is …