Thanks!

To be honest, I don't think the upscaled icons are a significant issue because of the use case of the application. Most likely users won't be spending too many seconds looking at the In Car Home Screen itself since its main purpose is to provide access to other applications. Also, when the phone is in a car phone holder, it's usually viewed from an arms-length distance, so scaled icons really shouldn't be much of an issue. It may be my eyesight, but I honestly can't see the upscaled pixels from the normal use case distance so that it would bother me (even though bad quality graphics usually do bother me). Now, thinking about it, I'd rather have the upscaled icons than the small icons with a bigger button around them because the most important thing is to immediately recognize which button is which and for that the upscaled icons suit their purpose just fine.