INVISIBLE ENGINE SET

This GRF does almost nothing, just adds one engine with invisible 1*1 px sprite and a wagon version. Now you can put any wagon on side track, just add engine at one end of train! For advanced eye candy is possible to put invisible wagon(s) into consist and you have more visible consists on one track.
I got this idea while I was playing with V4 set, which has actually one, but as refit. So I decided to make small NewGRF with only one engine using same principle, thus usable with any train set of your taste.
If you find something wrong with it, please, report it here. First, read the readme, if that is not intentional or known.
License: GPL v2
Source: Current version: 1.1.0 (24.5.2021)