Absolutely amazing and durable. My son is now 15 months and has played with this for several months now. Doesn't quite have it down but he loves it. He's also thrown it, dropped it, chewed it and this thing is still going just as strong as it did fresh out of the box.
Everything that you'd expect to maybe come apart or fall off or be a hazard isn't the case. Even the antenna caps are screwed on.
After my son put this through the wringer I can't do anything but recommend this toy.