Some form of hybridization is going to make sense for a lot of vehicles for a long time.
And I say this as someone who drives an electric car.
For instance, electric cars do poorly in bitter cold. Lots of reasons why - battery performance in the cold, the need to get working components up to temperature, the need to keep the occupants at temperature.
Some enterprising DIYers have discovered ways to add tiny fuel-burning heaters to their electric cars (largely, using aftermarket heaters intended for diesel trucks). It makes complete thermodynamic sense. Use electricity - pure low entropy energy which took a lot to generate - for doing work. Use a fossil fuel for generating your max-entropy heat.
The efficiency losses in electricity generation and transmission and storage and the coefficient of performance of a small heat pump just mean it's vastly more efficient to have a fossil fuel do some of that. It could substantially improve the car's "eMPG" in severe winter conditions. You'd be using maybe a tenth of a gallon of gas an hour (as compared to say 2 gallons per hour used by a conventional car) while saving a *ton* of your electricity for propulsion. In some cases people report nearly doubling winter range.
But you won't see manufacturers adopting it, simply because "all-electric" is the sales pitch and too many "green buyers" don't know what actually makes things efficient and environmentally-friendly.
There's a whole range of ways to better use our energy options, and saying you'll only produce zero-emission cars (which, there's no such thing really till grid is 100% renewables) is almost as silly as people still producing gas-only cars. (At least some mild hybrid features like stop-start should be completely universal by now.)