The introduction of the batteries is already an entire program. The compartments are too small and we must ensure that the poles of the batteries are touching their respective terminals. After an hour of very fun to use (and without specific clashes or falls), the car more advanced. Despite the introduction of new cells persisted in the car inaction (or slow avanc'e). Thanks to the excellent service from amazon return, we received a new car very quickly. Unfortunately, the quality still was poor. The new car went wrong, then after some time they are the wheels that turned any more. The one that ran, it was the engine, but in vain since it no longer entailed the wheels, my son, despair and father (me in this case) of perplexity.
