NEW CAR OPTICAL BRIGHTENER. For better looking showroom cars and a better looking CSI, use Spot Delivery every day. The optical brightener in this Incredible product makes the difference! Spot Delivery is excellent for everything from showroom maintenance, new car delivery, lot vehicles, waterless car wash, and much more! Use Spot Delivery in your showroom to remove finger prints or smudges, and make the showroom smell great in the process.