Every day since last July when I bought this "Cars" potty seat, I have dutifully sat Quinn on top of it. And every time he has dutifully sat there, looked at toy catalogs or played with an envelope of potpourri, and then smiled sweetly at me and announced, "All done potty." Never has he deposited anything in there, mind you. Until now! One night I noticed a drip or two and made a BIG deal out of it. A couple nights later we got a tiny little squirt - bigger deal - and the third night an actual, bonafide pee pee. "Look!" he announced, pointing. "Pee pee come out the penis!" BIG PARTY. All the excitement prompted him to put the potty on his head and christen it a "potty hat." This kid is immature in many ways, but his sense of humor is crazy sophisticated.
Since then he has been doing his thing almost daily -- If I get him to the potty at the right time, he'll go; if not, he'll just use his Pullup (now known as "underpants."). One day he even added a bonus feature: "Poo poo come out the bootie!"
So we're getting there. Finally.