The Japanese Super Formula.
The trend of Japanese Super Formula has became attention since 2014 when young drivers from F2, F3, etc. cannot reach F1 graduation for some reasons (SuperLicense points not enough, room is full, lack of funding/sponsorship, etc.) has now become alternates for young drivers. For example Stoffel Vandoorne and Pierre Gasly, both of them made it past SF and graduated to F1. As a motorsport expertise, i think young drivers must introspect for realistic F1 graduation chance probability from F2.
Your opinions?