No more exclusively, but IIRC still around 75%. And while railfreight is increasing, its market share doesn't. *Lunatic*, n. One whose delusions are out of fashion.
By the way, more useless transportation knowledge: Sweden is the country in the world which is most reliant on the manufacture of heavy trucks, and a fifth of all trucks manufactured today are made by Swedish corporations. Peak oil is not an energy crisis. It is a liquid fuel crisis.
