The wheels are made of rubber and are free rolling. The rolling is quite smooth, so be mindful of where you display this model (or it could rolled away and off a table/shelf. Better chuck the wheels just in case).
The doors and hood can open revealing nice interior details.
These models comes in an individual window box.
Keep in mind that these are really not toys. They will not last if played with regularly or if taken for a spin the the sand box.