"I bought this for my kids (9 and 4) to teach them about gears and how skid steering works. Went together fairly smoothly and is very fun to drive. On carpet, this thing is awesome!
The only drawback is operating on tile, laminate, and hardwood floors. It just has no real traction. If Lego had included the rubber track studs that they use in other sets, it would be able to climb steeper angles and have much better control on hard floors."