Just one minor glitch; the salt water \'engine\' contact is a bit loose, sometimes I need to adjust it a few millimeters to make the car run. Other than that: Great fun, cool, good looking and fascinating. Drifts on wooden floor! Will order more! It\'s an excellent gift for any child (or adult nerd ;-).
This model car is fantastic to promote use of and further exploration of green renewable energy. It demonstrated strong power from solar source AND also from salt water. I used 4 drops of salt water to power it. However, user must choose the source of power, either solar or salt water, by clicking a switch at the bottom of the model. Great product. An eye opener for everyone at home.