A Greater Portland Metro bus stops at the Portland International Jetport in June 2024. (Shawn Patrick Ouellette/Staff Photographer)Scarborough is getting a new bus route and an on-demand microtransit service in October. Many residents have questions about how Greater Portland Metro’s expansion into Scarborough will work. The new bus route — Route 25 — will operate along Route 1, from Cabela’s to downtown Portland. The transit’s Route 60 bus route runs every 150 minutes along Route 1.