Strange Chemtrails in Northern Idaho

On Sat, 6-20-2015, mid morning, my wife and I were driving in the Couer d’Alene area of Idaho. As usual, the sky was criss crossed with spreading trails. Even my wife, normally pretty “jaundiced” about many things which get my dander up, was paying attention.

Driving South on US 95, she remarked about a particuarly strange trail. A four engine jet, somewhat lower in altitude than the existing trails, was headed from West to East, and was really pumping out trails, which appeared to be merging into one. What was strange, something she noticed and something I have not seen before, along both sides of the forming trail and extending along the entire length were two swirling black trails.  These appeared similar to exhaust plumes, but  were much thinner and remained on the outside edges of the main trail. They thinned but did not dissipate. We DID NOT get photos due to not being able to get off the road.

Anyone else have similar experiences? I have seen thousands of rails, all types, but nothing like this one! We will be watching for similar trails and will try for photos. A picture is worth a thousand words!