car line
A line of automobiles, either on the highway or a large main street, which consists of a long stretch of automobiles which are usually tailgating each other. It is very hard to switch into this lane until you let the car line pass, or you manage to get up in front of the float which is causing it.
My exit on the highway was to the left, but a car line had formed in the left lane. This was going to be tough.