That saying about everything looking like a nail to the guy who has a hammer came to mind the other day when I passed a local cop in my one-stoplight rural SW Virginia county sitting by the side of the road running a radar trap in his brand-new Ford Explorer – paid for in part by the property taxes (i.e., the rent) I am forced to pay each year to the county in order to avoid not being evicted from the house I "own" in the same sense that you are "asked" to pay what they like to call a "fair share" of your money that you earned to benefit other people who didn't earn it.

Apologies for the long sentence.

Anyhow, it occurred to me that the local cops didn't used to run radar traps in the county because they drove old Ford Crown Vics that didn't have radar rigs. They might have wheeled around to pursue a "speeder" if the "speeder" (silly term, isn't it?) was driving at a speed obviously much faster than whatever the speed limit  happened to be. But they didn't lurk in cutouts by the side of road running radar to catch "speeders" driving a few miles-per-hour over whatever the speed limit happened to be. They mostly dealt with criminals because you only need a car to do that.