Here are some additional Tipps on uploading to Google Street View.
1. At the time of this writing, uploads are done at: Street View Studio
2. Stop Recording while turning the car. The Overlapping of Coordinates may lead to problems when uploading. All Coordinates should go in a clear direction.
3. Remove Trackpoints that are on the same location as other Trackponts. If needed make new Trackpoints just nearby.
4. Do not completely delete Trackpoints if not needed, because there is a dependence in the Timeline/Trackpoints of the GPX-File and the Pictures in the Video.
5. The "Marks on the road" will be at the wrong place if the coordinates are not on the right place. It looks like Google does not move these to the road at the time of writing.
Picture: The "Marks on the road" depend on the Coordinates that have been uploaded with the GPX-File.