Rarity?

I am a disc brake guy. Especially the LBP brakes on A-Bodies.
However, a lot of drag race guys go to the drum brakes because they have less rolling resistance by adjusting the shoe away from the drum so it sort of ''free wheels''.
That being said, they have a lot of shut down area to deal with and not an example of ''Real Street'' applications.
That would be scary on the street and i wouldn't condone it!
But it works at the track..............