'Is there any credible doubt that electric cars are the future?' I think in the near term yes.
Hybrid is the only viable next generation of vehicles, with full EV possibly after that.
In markets (California and Norway in particular) where there is significant EV growth you are seeing Hybrid sales drop quickly.
China are building out scale EV infrastructure and since they are the main global market for vehicles going forward it seems inevitable they will ultimately own the EV transportation and infrastructure markets https://en.wikipedia.org/wiki/Smart_grid_in_China