These track sets lack the advantage of imaginative play. In the end they have less play value than setting up dominoes and watching them topple. At least with dominoes you can have hundreds of different combinations vs. the handfull with these tracks. Hotwheels manufacturers have forgotten that these cars were always about the play value in setting up the tracks with invidually bought loops and track. Granted, you can buy the straight track pieces but there are no additional sections to attach them to for corners or loops. For the 6 yr old grandson, he lost interest after about 5 setups and went back to set up his track from the couch, across boxes and off into the hall way. Let's see something that is truly interactive not this repetitive dumbing down business!