Trying to Re-couple the Zoo Train

Benjamin could take or leave the animals at the zoo, but the train is what he loves. This is just a bunch of unused train cars. Benjamin spent a lot of time playing on them.
He took this picture of Alexander and me.
Benjamin got really greasy hands trying to connect the train cars together. He says he wants to be a construction worker, but I asked him "Do you want to be a race car driver or a construction worker?" Maybe if I had asked "Construction worker or mechanic?" he would have said mechanic.