I hate tailgaters. And on a 4 lane road there is no need for them whatsoever!! What are they thinking???
55 is a little slow though. Still, if there is room to get around you I can see no reason why they can't read the road ahead and get into the left lane ahead of time to get safely around you.
Driver education in the US has become a joke. It's too easy to get a license. All they do in MN is to put in "graduated licenses" so people have to drive longer before they can get a license. But, no one is teaching drivers education anymore.
It's a shame.