I bought this toy for a plane trip. I like that it is flat and hard, the size of a thin hard cover book. It has a ton of stickers and the artwork is fun. My son basically just stuck all the stickers all over (he is two) but I imagine you could use this toy with an older child and really make a good scene (with the cars on the road and not on top of buildings) and discuss the types of vehicles, road signs etc. The stickers are vinyl so they don't stick to his hand or clothing and will be able to use them for a long time.
I bought this product after a friend's recommendation for a long flight with our 2 year-old son. With so many stickers, it occupied him for quite a while! It's cute and reusable - I highly recommend it.