I was making a stylised amusement park for a project, and wanted to create a roller coaster track by duplicating planks along a curve.
To do so, I created a curve and snapped the plank object at the start of the curve.
I selected the plank, shift-selected the curve, and hit Animate –> Motion paths –> Attach to Motion paths.
Hitting play in the timeline, the plank object moved along the curve.
To create duplicates of the plank along the curve, I hit Animate –> Create Animation Snapshot.
I played with the increment so that I was happy with the space between the duplicated planks.
Near the end points, the spacing was very small, so I deleted the objects that I didn’t want to keep.
This is where it ended up: