I've heard that classic music helps people to come down and people listening to that are better in terms of safety and FE.
To be honest I'm listening metal and hard rock mostly when I'm driving with no safety issues with (IMHO) good results in FE. I'm thinking that listening to mellow, gentle music would make me bored and I would push the pedal to the metal just to not get bored to death.
Do you think that music that you are listening while driving affects your FE?