I don't think the video showed all the available route for the RC-XD but yes, all the routes shown are available on the Wii. While they are fun to explore, they are next to useless.
What you should be aware of is the RC-XD glitch on WMD. There's a point on the map where the RC-XD can get under the map and can kill players from underneath. Because they are under the map, you can't really hear them coming. Even when they explode, you can barely make out the "boom". I have been killed by those a few times and it's very annoying when I'm on a high killstreak.