Here is something I found recently for putting your aircraft models into the air and it looks like it is really easy to do.Shep Paine talks about these double-sided mirrors in his book and the great effects that you can get ,especially with dioramas .I have not used them myself but if the quality is good with no distortion you can be sure I will find use for them in the future.
There is one thing that bothers though ,Why did the builder create that double line down the center line of the runway?Was it to hide a poor fit of the mirror or is this not truly a double sided mirror?Will get back to you guys on this!