Gtechniq G1 Smart Glass is a hydrophobic coating for all glass surfaces. G1 is built on the same nano-active technology as the innovative C1 Crystal Lacquer and some of the other popular Gtechniq coatings. This coating will bond with the glass to create a slick protective barrier from the harmful elements.
In the below video, James Melfi talks about proper coating application, using a BMW M5 Competition!
Source: YouTube