Group 1 - The upcoming launch of the trackless trolleybus service in Hangzhou aims to enhance public transportation experience for residents and tourists during the peak travel season in October [3][4] - The "City Roller Coaster Pro" night tour route has been optimized, allowing passengers to enjoy a unique experience while traveling between six iconic bridges [3] - Adjustments to bus routes and service times around popular areas like West Lake and train stations will be implemented from October 1 to 8 to accommodate increased travel demand [3] Group 2 - A new batch of 30 trackless trolleybuses has arrived in Hangzhou, with testing and registration currently underway, expected to be operational by October [4] - Some of the new trolleybuses will feature classic designs reminiscent of historical models, and retro bus stops will be established at certain locations to evoke memories of old Hangzhou [4]