I have 2 coats on the tail lites on my car and it had instant PT at any distance. Other cars was also tested and the same results was the same. Instant PT at the rear taillites. IMOI the veil on my rear tail lites did not help one bit. I know my rear plate is reflective but there is more space that is VEIL'd so I would think that would offer some amount of protection but I was wrong.