As are things like Dior's, Roberto Cavalli and the other high designer brands. It's more about form than function. In a nice way.
Oakleys, Vuarnet, Maui Jim, Adidas and a few more are for more sports orientated or high quality lenses, especially if you have sports, driving in mind.
Hey Chris check out some of the super lightweight titanium 's in the Maui Jim range, you might like those.