The Truck is the main part of Motorized Desert of Destruction. It took about 2-3 hours to build. It is not especially fast, but it is quite fast for something of it's size. It looks a lot like the original truck.
The front of the truck contains the drive motor. I had to remove the inside to fit it in. I put the driver minifigure head in because there was a bit of extra room. The front wheel are driven directly from the motor.
The Steering was the hardest part to make. I actually took out the whole front of the back section to make it. I put the part that I took out back in in the end. I had to raise some parts of this area to fit the motor in.
It was very easy to fit the NXT in the back of the truck. I did not have to modify the outside at all.
The remote control is very similar to the nxtprograms 5 button remote control. It uses an NXT and 2 touch sensors. It also has a wire guide so that the wires do not get in the way.
The Backyard Blasters Vehicl is controlled by a lego 9V motor and battery box. The motor has an axle leading to a gearbox that turns the wheels. The motor does not have much torque, so it cannot move on carpet and has a hard time moving on tile. I got the motor from Lego #4094 (Motor Movers). The wire connecting the motor to the battery box is quite long (see picture 4).
The program is very similar to the 5 button remote control and race car programs from nxtprograms, so I give all credit to nxtprograms. File 1 is the remote program, file 2 is the program for the NXT that motorizes Desert of Destruction.