This is a normal sight on the freeway. I had noticed that these 3 folks (all girls) were pushing the car and they had changed from the right lane to the left lane. Why? The upcoming exit was a left-hand exit.
I would have pulled off to the right hand side, but I think these energetic Guatemalans were hoping that pushing the car 1/4 of a kilometer down the highway CA-9, they could coast on home.
To put it in perspective. This photo was taken on hiway CA-9, between Guatemala City and Villa Nueva on a road very similar to Interstate 20 or 635 (Not!). There are 4 lanes, sometimes they are very fast but many times the traffic crawls up the hill and around sharp corners.