Option to toogle road overlay independently of Bing Maps data?

Is there any option/hack to enable the road overlay with Bing maps data on? Right now it seems to only appear if bing maps data is off. I would like to have this option to cover up the low res roads with baked in cars and whatnot in Bing maps while keeping the other goodies that come with Bing maps on (fields, correct shapes of houses on ground,…).

(mods, please do not move thread too fast to suggestion in case any1 knows the option/hack)

Topic moved into #sdk-discussion:scenery