I haven’t held a train race at dusk in a long time so thought it was due. I put 5 small locos on the track which is powered with a train engineer and let them go. Some are faster than the others so I had to be quick and send them up the mountain to buy time to allow the faster to pass or to hold it up.
Great fun and when it gets really dark it is neat to see the headlights shining like giant speeding fire flies darting about the backyard.
When you have some time to waste.