My kids received these cars on Christmas and there has yet to be a day that they haven't ridden them. They have been riding practically non-stop since Christmas day. I actually had to stop them from riding to get them to open the rest of their presents (and so I could take a turn, ha ha!).
We get together with a playgroup weekly and several of the other kids have these cars; they all tear around the gym and have a blast! The only problem - I should have gotten one for my 18 month old, too! She loves scooting around the house on them.
As seen from our friends that have had these cars for a while, they hold up very well to active use, are safe and fun for a wide range ages and are, according to my kids, the "best Christmas present ever!"