i read a few years ago that over the last 50 years (i think) the road network has increased by 30% where as amount of traffic has increased by something like 700%! i think a lot of the frieght should go back onto the railways, maybe a drive on - drive off system like the euro tunnel trains? it seems every hold up on motorways and A roads are lorries trying in vain to overtake each other, or they have crashed or broken down.