First robot build with Lego Mindstorms NXT 2.0

My first robot build with Lego Mindstorms, created with a group as an assignment of a University subject.
As it is our first time it does very little, it just manages to stay in the dohjo by detecting the white line. Also if it detects an object it attempts to load it and carry it to the border to unload it. It uses an ultrasonic sensor to detect this objects. It has a color sensor 1 cm above the ground to detect the white line. It also has contact sensors at the back but we didn't use them, although we planned to.
On the video below you can see two runs. The first time I forgot to connect the color sensor, so you can see that the robots bumps out of the dohjo. The second time the color sensor is connected. You can see the light shining on the floor on the left side of the robot. Well, hope you enjoy!

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