Is traffic speed really still enforced by aircraft?

(NEXSTAR) - You probably grew up spotting the signs from the backseat of your car on family road trips: "Speed enforced by aircraft." As a kid, the idea may have sounded high-tech and intimidating. As an adult, it probably seems more costly and impractical. So do the patrols still happen?The short answer is yes, some units across the country say they still patrol by aircraft, but technological improvements and cost considerations have limited air enforcement.
The California Highway Patrol recent