I bought the grey and green older model for my kids. I saw one last week at a resale shop, it's definitely made of thicker, sturdier plastic and the wheels and axles are better. This is a cute item, but my not yet two yr. old grandson I bought this for makes the plastic buckle slightly when walking on the ramp. This should be much better made and with thicker plastic and better wheels and axles. It feels flimsy compared to the old model. This is a great toy, but I worry it won't survive my two grandchildren for long.