"This is my 3rd big LEGO technic set after getting the bucket wheel excavator and the Porche 911 a few years back. I decided to jump on this set because I was interested in controlling it through the app, as well as the 3 gear transmission. I have to say it was a very rewarding experience putting together the intricate mechanisms and found parts of this build quite challenging, even for a 20 year old, lol. In particular, looping the wires from the back portion of the truck to the front to connect to the usb hub was a little bit tricky. When you’re finally done building it and you connect it to the app, you have to let it calibrate, and let me just say seeing it come to life was kinda... freaky, but so cool at the same time. My few complaints with this set is that the truck moves pretty slow, and has a HUGE turn radius. After a few minutes, I can say that it’s very fun to drive around because it takes forever to get anywhere, especially if you’re driving it long distances outside like I was. Ehh maybe I’m being a bit too skeptical and kids won’t think as critically about it, but those are just my thoughts... take them as you will. I did have one missing piece (for the first time since I was 8!!!), but placed an order for it and it’s on its way. It wasn’t a very important piece, it was just a circular black 2x2 found on the interior when you pop the hood. Overall it was an enjoyable building experience and was fun to play with for a little bit. Probably better geared towards younger children to play with, but is a very nice display piece!"