I haven't driven a GM car in quite some time so I don't know if they've changed, But, a couple of years ago I was traveling to several Army bases and every Hertz rental car I got was a GM. When I came up to the Gates at night I couldn't even dim the lights. My first thought was "Why in the Hell did they bother to install a switch?" It didn't do a thing after dark. Since that trip I don't let the renal car places give me anything GM.