Recap: Slow down, save lives, the environment, brakes, tires, money and nerves.
I do a similar test and was so relaxed after drivind arround speed limit that now I just dive that way... Speed is dangerous not only for us but also for others and it is stressing. Some drivers thinks they are better than the other and have the permission to drive fast but it is a jugement error... Slow down, the life will be realy better for everyone