Professors at the University of California Los Angeles recently performed an experiment in an attempt to compare vehicle force and speed period. They drove a vehicle into a brick wall at 60 mph and then measured the impact. They then dropped another vehicle from a height equal to a 10 story building and measured the impact. Surprisingly, both of these readings were the same.
Thus, if you are driving your vehicle at 60 mph on the highway and strike a fixed object, the effect would be similar to driving your vehicle off of a 10 story building.
Whether traffic laws are enforced or not, the laws of physics will always apply.