Skip Cook writes: It is seven-thirty on a Sunday night I have just completed the last leg of my trip home from Guilin  China As I travel across the Arkansas River bridge from the Little Rock airport  headed for the bedroom community of Maumelle  where I live  I notice something conspicuously absent from my drive: Horns  nobody is honking! In China  both in Shanghai and in the smaller city of Guilin  every vehicle has a horn