rear window visor...affect on drag?
 

i was poking around a yaris friendly mod site & i saw this;
http://shop.microimageonline.com/ima...rearvisor6.jpg

i'm wondering would a rear window visor hurt or help?

BTW i have a base model, so no rear spoiler like car in the picture

malibuguy -

I like those too. For those to help I think they would need to line up with the streamline template.

CarloSW2