Ohhhhh shoot.... according to the tech report on the V1 site..
... The "terrible" cars cut radar detector range by 95 percent. Even V1 can't protect you through those windshields. /snip
Here's a list of "terrible" cars:
• Audi A8 with optional "insulated glass" (look for a bronze tint)...
......
angry
Of course thats what I have A8L