F1 is facing a shortage of race-ready drivers but it has little to do with the controversial superlicence system. Red Bull’s attempt to sign IndyCar star Colton Herta for sister team AlphaTauri has hit the buffers due to the American’s lack of the required number of superlicence points.With F1 and governing body the FIA refusing to grant an exemption, Red Bull have been forced to admit defeat in their bid to bring the 22-year-old into their programme.