I tried to make an instrumental of this, combining the version from the end of the movie with the version in the music video.  It's not a perfect instrumental, as a few vocals can be heard in some various places, but it's a much better instrumental than my original attempt at this.  I'll be working on further improving it soon, but until then, enjoy!

Really Useful Engine (TAB) - Near Perfect Instrumental

I'm Oliver11GWR, instrumentalist of themes and full episodes from Thomas & Friends.  If you ever need a theme or episode instrumentalized, hit me up!  Feel free to use any of my music on here.  Enjoy!