Lets not forget this, about the unlimited-speed (in most parts) Autobahn in Germany:
“The overall safety record of autobahns is comparable to other European motorways, and motorways are safer than other road types. A 2005 study by the Federal Minister of the Interior indicated that there were an equal number of accidents per kilometer on the autobahn in sections without any speed limits.”
Increased speed does not mean increased fatalities.
I’m not arguing for lower speed limits and I certainly do not advocate cruising in the left lane, but, I do think you should choose your comparisons very carefully.