It doesn't appear to allow uploading shapefiles to the app. It would be great to upload a shapefile or create shapes within the app to highlight the area or location where the road ends. This way, you can easily add context as to where the event parking is, or the property location is. Having the option to 1) have that shapefile appear once the road reaches it, 2) have the shapefile actively shown the whole time, 3) the ability to control the color of the shapefile and opacity controls for fade in-out.
Is this on the roadmap? If not please add!