I may be giving the Washington State Patrol more credit than they deserve, but I've since been told that this particular, humbling spot north of the army firing range is Yakima County's #2 or #3 revenue source (WA counties get a cut of the take of WSP tickets inside their county), and part of me had to admire just how totally I'd been had. You drive uphill with the ridge blocking the view to the southwest, across a couple of ravines that give you some brief views (rather that give the spotter a view), then pass under a county bridge (the starting mark for the trap) right out into a full exposure to the southwest (now heading downhill, dang). At 80, you're over the 1/4-mile trap in 8-10 seconds even if you wise up and start slowing.

Pity the gent who had been slipstreaming us (in an Aerostar van of all things), didn't slow, and got clocked at ~100.

Parts of the Grapevine in southern CA seem like a good setup for this kind of thing.

Jim