In the last year or so, this has really taken off like a freight train without brakes.

The freight train has stowaways hidden all the way through.

The big diesel freight train vs. the little engine that could,

This trial is moving like a freight train.

We haven't really paid attention to what goes on below the surface in Puget Sound or any water body.

I do think it's a freight train that's going to pick up steam. I don't think it's a fad.