The Itruck runs over shag carpet like it not even there, I have these runner carpets that get bunched up and form hills and jumps and goes up and down them easily.I found out the reason if you look at the last link on a french site on how to modfiy the truck.It has a large servo motor not a little pager motor.Also it has a self contained trasmission attached to the rear axle that pulls out.Check out his video if you like climbing or swaper trucks you will like the video. The Itruck blows away my tomy wild charg easily