I think Ushahidi is very useful. If you want to go somewhere, you can use it to see the traffic condition. And you can go there in the shortest time, so you don't have to waste too much time on traffic!
Added by Erica on June 17, 2011 at 12:05pm —
After one hundred years, maybe there will be no energy. So we don’t have gas to start a car. We will create a machine, that use scream to start it. When the machine need to start, people can scream at it, and you can use that machine. That kind of car is good, because you don’t need to find some other energy, just scream or yell at it, the car can move!
Added by Erica on April 27, 2011 at 2:47pm —