Nope, never seen one, but did a job for an army base in our territory, the army was spending big bucks installing new electronic targets. They also were installing some type of track where a vehicle would be pulled and used as a target. We installed about 6 or 7 transformers throughout the range and put them behind concrete walls with berms that look very similar to that pic.
on a side note, at the same base during live fire exercises a cobra pilot took out a 3 phase pad mount with a round. I always wondered how much sh!t he ate for doing that......
"It is not the critic who counts:The credit belongs to the man who is actually in the arena" Teddy Roosevelt