
The best thing is you can add them everywhere: on the map in-game, in the outro sequence and saved replays!

How to add trails?
1. Download this file
2. Place this file in C:\Users\{username}\Documents\TrackmaniaTurbo\Replays\Clips\
3. Open your map / replay in MediaTracker and click "Import clip" (4th button bottom left).
4. Profit.