Plan toys is a wonderful, very “green” company that makes solid, well-crafted toys, and this vehicle is certainly no exception. I feel safe that my sons are playing with a toy that is guaranteed to be painted with toxin-free paint, made out of chemical-free wood, etc. The toy itself is smooth and very easy to push. It glides, rather than rolls: so well-engineered. There are no rough spots, sharp pieces, etc. As you can probably tell, the 2 cars can be taken off and played with on their own, and other cars from the PlanCity line can fit on interchangeably. My only (very minor) complaint so far is that the back black piece that holds the cars on the truck bed does not “lock” into place in any way. It can come down when pushed quickly, but so far the cars do not seem to roll off the truck on their own. Still, my 4 year old LOVES the Plan vehicles, and these toys from the “PlanCity” line are no exception. He gets a lot of use out of them, and doesn’t show signs of growing out of them anytime soon. Highly recommend.