This truck is so much fun. I knew when I saw it that it would be loads of fun and I was right. The break in was easy to do and the truck runs great. I don't have enough room at my house to open it up so I took it to work where I was abe to really get some speed out of it. Very fast and super nimble for the size. It is a big and heavy truck but like I said it really can move as long as you have the space to let it go. I ran it in dirt, gravel, blacktop and grass and no matter where I ran it would just keep going and going. The battery pack that came with it holds its charge good. I did find out that after you run 2 tanks through it you must recharge the battery pack since when I had it at work it gave out before I got through the first tank of gas. At least I had it close by and was able to stop it before it took off but I found it wouldn't go far since the system will just shut down when the battery power is low. Can't wait to have the time to play with it again and have a lot of fun with it.