most (not all, some contributions are QTVR-only due to historical reasons)
many, but depends on photographer's choice of file upload (newer event = more likely to work) and your device's capabilities. You may experience slow playback, distorted images or unexpected browser quitting if there is only limited memory/GPU power available.
The Forney Transportation Museum is a one-of-a-kind collection of over 500 exhibits relating to historical transportation. It began with antique cars, but soon expanded to include vehicles of all kinds.
Latitude: 39° 46' 40.5" N
Longitude: 104° 58' 13.99" W
Precision is: Medium. Nearby, but not to the last decimal.