This song started as a witty train safety song in Melbourne Australia and now it has become a world wide hit and phone app game etc.
There are a few tricks to playing this one. First off in the verse don't take your finger off the C chord and play the F over it. This makes iteasy to play and more like the original track.
Next up if you find the G's hard you can play G7 and lostly in the bridge section you can leave the chords out that I've put in ( brackets) if it makes playing easier ! Good luck and pay attention on roads, waterways outer space etc !