I think a lot of the speeding is due to the fact that rush hour has gotten worse (it lasts longer and the speeds are slower) so when the traffic is relatively clear there is a tendency to rush even more.
I am amazed at how many people tail-gate, and I’ve never heard of anyone getting a ticket for it. There was the “rule of thumb” in driver training that you should allow one car length for every 10 mph that traffic is moving. At, say, 80 miles per hour, that is a minimum of EIGHT car lengths you should allow (more in rainy weather). I see cars right behind the car in front of them…right behind. Yes, sometimes the driver “in front” is driving a little too slowly, but still…
The other thing that is interesting to do is to notice the expressions on people’s faces. So many people seem to be saying (through their facial expressions), “I don’t think I can take another day of this” or something like that.