Hasn't this technology been used in cars for a long time already, or how is this different from other laminated glass?<p><a href="https://www.pistonheads.com/gassing/topic.asp?t=626634" rel="nofollow">https://www.pistonheads.com/gassing/topic.asp?t=626634</a><p>(Where I live, the roads are very rough because people use studded winter tyres, so I'm interested in what cars are quieter.)