Love the convenience of your plastic wagon but hate lugging it into the car or perhaps you don't have room to throw that in there?  I found a fold up wagon that folds down to the size of a pack-n-play, comes with a travel bag, has a removable canopy, w/mesh pockets on each side for drinks, comfy padded area to sit on and rubber wheels that are not noisy.  We use ours a lot for our 5 yr old and 2 1/2 yr old and I get a lot of compliments on it, especially when we went to Storyland this year - we were able to fit our kids and our friend's kids  - another 3 yr old and a 4 yr old all in the wagon.  The downfall is that there are no wheel locks but I found that if you walk next to the wagon using the handle as your brake, it is fine.  It has been so great to finally have a wagon that is travel friendly and easy to throw into the car!