A Singaporean couple injured in a motorcycle accident on Johor's North-South Expressway found help from a group of Malaysians who stopped to shelter them from heavy rain and assist them after the crash.Among them was Joan Ng, whom China Press identified as the National Vision Party's Kluang division chief. She was travelling home after helping with election campaigning in Melaka when she came across the scene.Spotting several motorists using sma…