CCCWC October competition voters’ comments on Clue no. 13

A clue to OPAL (Printer’s Devilry).
3 comments refer to this clue (from 2 competitors, 1 other)

Here is the text

Comments on the clue

1.	Nice idea but needs some context – e.g. "Many horses gallop along behind the truck"
2.	Deserves a share of the points for originality and bravery.
3.	The undevilled reading should be more of a sentence I think.