Update tracker for Sinaia:

4. December 25, 2022: Another Mercedes bus.
   • 1 picture -- 1 Bus.
3. January 7, 2022: Some of the new Mercedes buses.
   • 4 pictures -- 4 Buses.
2. November 13, 2020: Various photos, including part of the new Mercedes buses.
   • 11 pictures -- 9 Buses, 2 Vans.
1. August 7, 2009: A BMC bus.
   • 1 picture -- 1 Bus.