[nana911]

I have the AT3 and have never had a problem with it open or closed, and when we're camping in the cold with a bit of wind, the wind screen is wonderful. Those wheels will go over any terrain.

I'm scared to leave mine in the car for any length of time..scared to death of them getting stolen. When we travel I won't even go into a restraurant to eat and leave them. Way too paranoid.

I have 4 dogs total, the 2 youngest being little yorkies and if you do use a well fitting harness and coupler leash like you get from Chattiesmom, you can grab them up pretty darn fast when danger shows up. Jerking them up quick doesn't injure them, and the coupler keeps them from getting separated or tangled around you.