The gear are there to make the robot move. You can make them go fast or slow. This comes with the robot when you buy it.
to get the robot in Lego Chronicles you must achieve 100% in the game.
It is a Lego mindstorms product which is used for robotics . Targeted at children.
correct
complete the game (100%)
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LegoLand!!
you don't have to do anything after unlock him but you could destroy the city.
Quick answer: LEGO NXT is a robot made completely of LEGO parts and sensors. However NXT LEGO 2.0 is the new robot which is more advanced since so many extra parts could be added to the old NXT LEGO.
For the newest kind of robot, the light sensor is used to detect the white lines from the dark lines on the nxt this helps your robot follow the lines!!
you cant
change your car.
maybe check it out in eBay