There is absolutely nothing new in tech advances that makes it easier to enforce speeding laws. In the 80s I read some book about beating speeding tickets, and they did the math about the profit margin on a radar gun. It turned out that the average radar gun generated a net profit on the order of $1000/day/gun. The obvious question is why aren't there radar guns on every police car? The answer is obvious: local politicians don't like to get tickets, either.