I am interested, but would like your updated opinion / review of Rad since this is an old posting. Still love it?
I have the RW4 and LOVE it. I take my 4 and 2 year old out on it almost everyday to different parks around town. It's awesome. There is some recent issue with tires for the Radwagon, but I've had mine for almost 2 years, so i THINK it didn't impact me. We have cold winters here in MN, and i'm not as tough as MMM himself, so i probably will stop riding it around soon and pick it back up in March/April, but in the summer months, it probably gets used 5x a week between light errands and going to parks. I've put on about 1500 miles on it. Which isn't a ton in 2 years, but i'm not going more than like 5 miles at a time.
My wife as the rad city step through, and she loves it as well, but rides it considerably less. She uses it to run to the post office and library and some joy biking, but she can't take 2 kids on it, so it limits her a bit in that sense.