Twenty years on from its rescue by Renault, Nissan Motor is unrecogniseable from the heavily indebted firm which Louis Schweitzer, Carlos Ghosn and Yoshikazu Hanawa began rebuilding in 1999 with the creation of the Renault-Nissan Alliance. In the post-Ghosn era and with a proposed FCA-Renault merger under discussion, what might the 2020s hold for Nissan?