The product commonly used is called Scotchcal, a clear urethane sheet developed by 3M.
The product works well for preventing minor paint chips and eases the removal of bugs and road tar. It does not yellow over a period of time.
I purchased a RX330 6 weeks ago. This was our third Lexus from this dealership/salesperson.
Traded in a 2001 RX300 w/24k on it. Dealer gave us 70% of our original purchase price, plus
a $600.00 discount on the RX330. Delivery was same day, no waiting.