The stretch of cycle path which runs along the Shing Mun river in Sha Tin, just in front of where Sha Tin Sports Ground is now, is where Frankie Chan, Maggie Cheung and John Shum are all hanging out during the opening credits.
The path itself isn't covered on Street View, although it is pretty easy to work out where they all are, given the views across the river (to Yuen Cha Kok Park (the hill which is now slightly obscured by Belair Gardens) and down to the bridges (Banyan Bridge and Sha Tin Road; the former being where the Street View image is taken from).
