So I'm curious, how the commercials do. :o)
Commercial discs are "pressed" via glass master - the price for equipment like this - is well beyond the means of any consumer. Burning a disc vs "pressing" a disc is miles apart in quality (and readability) of final product.
You might also consider moving up to a pro grade blank disc like Taiyo Yuden (Japan) . If your car cannot read a disc on Taiyo Yuden media - time to get another car or another player.