An interesting thought

I have just been reading a blog by Scott B about limiting the speed of all vehicular traffic to 34MPH or 55KPH max speed This is a very interesting blog and I am beginning to wonder if our rush to get anywhere isn't rather short sighted.
I have already started driving at 80KPH most of the time. Most of my driving is on the highway and pretty much everybody passes me, I am not bothered by this because it saves a lot of fuel, and being on a fixed income this saving is very important for my budget.
The big question for me is what is the hurry?
I remember a friend once telling me that if you add up all of the costs that are associated with driving a car, The energy it takes to earn the money to pay all the expenses, it amounts to an average of 4MPH, if you convert all of the time taken to earn those monies into hours divided by the hours driving.
I am not sure of the math involved, but it does indeed seem like we spend a great deal of time and energy just to be able to drive 3 blocks, to pick up a cup of coffee at the local drive through.
The whole drive through issue will be the topic of another post.