Happy Holidays! This year, we've stepped up our limited edition holiday design and picked our top-selling products that you (or someone else) are sure to love. Holiday Car Shampoo is the same formula as our classic Car Shampoo with a holiday twist! Adam’s Holiday Car Shampoo is the ultimate way to wash your car. The concentrated formula produces more suds with less product and always rinses clean for a spot-free finish that won’t scratch or leave water spots.