Another member of the Zaino mafia, checking in. My salesman recommended it when I bought my Viper (he's a Viper owner and racer as well), and I gave it a shot, and never went back. Amazing stuff. Not a wax, and the multi-step process requires a little dedication (though it's easier to apply and remove than wax), but the results are unparalleled.
Yellow is a pretty difficult color to get ANY sort of "wax shine" type of reflection out of... had this been black or dark blue, it would look like a pool of water: