Weak points?
Charging the battery in 5 hours.
No possibility to play with several of these devices simultaneously. Finally ... if the possibility exists, it is not mentioned in the leaflet, and neither on the remote control or on the vehicle there is channel selector. I conclude that it is not possible.
Rectification November 2013:
The new models (on sale since summer) look identical to the old, with one important difference: the included charger to charge the battery in one hour!
On the boxes, a small sticker points out. Avoid buying a model from last year!
Other info on the box: the mention of a canal. And I checked in store: there are several channels. 2. Probably at least 4 (there is a letter: I saw "A" and "D").
What add interest to remote controlled toy!