Some more research on the Topic:
Apparently UE4 has FMOD integrated, a gaming audio solution.
http://www.fmod.org/fmod-studio-unreal-engine-4-now-available/
FMOD also allows to convert internet radio streams into playable in-game audio, so basically allows to set up a radio for your driving game that play real life stations.
Having real life stations playing while playing is just really cool.