Why not save the route, decode the polygon into its respective coordinates and use that to find overlapping roadparts? This would work all of Google Maps, also

Why not save the route, decode the polygon into its respective coordinates and use that to find overlapping roadparts? This would work all of Google Maps, also for bikes or walking. Example here on how to decode: https://github.com/geodav-tech/decode-google-maps-polyline https://github.com/geodav-tech/decode-google-maps-polyline