Zymol quotes some pretty high carnauba content numbers (note by volume, not weight, whatever the difference is -- huge I expect).
Destiny ($444 for 8 ounces):
Destiny Glaze is based on a formula first used on the 1930 Duesenberg "J" Murphy Convertible Sedan owned by Bruce Meyer and shown at the renowned Pebble Beach Concours d’Elegance. Destiny contains almond, coconut, banana and sunflower oils, as well as 51 percent Brazilian No. 1 White Carnauba by volume.
Vintage ($1,400 for 22 oz., refillable for life):
Vintage Glaze is based on a custom formula developed for the 1947 Bentley Mark VI Cabriolet by Franay, winner of several "Best of Shows" in its debut year on the Concours circuit. Among the protective ingredients in Vintage are evergreen, honeydew, coconut, cantaloupe and sunflower oils. Vintage contains 61 percent Brazilian No. 1 White Carnauba by volume, the highest in any product designed to protect automotive finishes.
Me, I just want to slather banana and coconut oils on my car. Or somewhere else . . . .