EDIT: Tried the web UI, doesn't seem to do that; it shows the separate PT/Cycling/Taxi routes, but none actually integrated. Plus the taxi route went over the river! (there was a car ferry once, but not for years)
The app definitely does (it can even do combos with public transport and uber), but the quality of the map might depend on the city.
It is great for the Paris/Barcelona area at least
I've seen it do combined subway/Uber routes in Moscow.