<human>: Summarize the given text in a few sentences.

I had two long drives this past weekend and have noticed a lot of people don't understand the correct way to drive on a highway/interstate.  It seems people are driving using completely random methods.  So I'm curious, how do you drive?

For example, on a two lane highway I drive in the right lane and go into the left to pass people(proper method).  What ends up happening every time though is that as more cars are on the road, more people seem to be just driving in the left lane making it difficult to drive at a steady pace and creates traffic as well as forcing other drivers to drive more aggressively to get through these random slow clumps of cars.

On a highway > 2 lanes, I tend to drive the same way right lane for driving then use the left lanes to pass cars.  Except if there is a lot of on ramps I will stay in the lane to the left of the right lane so people have an easier time merging on to the highway.  I am usually going fairly fast(at least 10-15 over) so I don't see this as that bad.  But then again, once there are more cars on the highway it feels like I have to slalom from lane to lane because people seem to choose a lane at random to drive in.
<bot>: I've seen people going switching lanes to the left without any cars in front of them and became curious as to why. So, how do you choose which lane to drive in on the highway?