Hi all. I just got my Digi Q circuit track in from sigma. I have no car to try it on but it looks and feels sturdy. it has slots on the bottom of the track pieces to put quarters to weigh it down to prevent moving. it also has slots on top of the barriers for the cardboard advertising strips. i’ll try and get some pictures up when i can. It looks very cool and can’t wait for my cars! oh, i am using this track for my bit char g whenever it gets here.