We know electric has three main problems - range and refuel time and limited lifespan of the batteries which add hugely to the cost.
Hybrids overcome one of those - range - by allowing you to top up from petrol/diesel/gas... but that means carrying the extra weight of an engine (and not normally something nice and lightweight like a gas turbine) which reduces the range on battery only to peanuts and drags down the fuel economy generally.
I would like to propose an alternative that is valid. Steam. (There are already compressed air cars in France but the energy density from this is not as high). A tank full of water/steam (normally you aim to start with around 80% water) at high temperature and pressure. You can plug the car in - preferably with a timer - so that the car is ready to go in the morning (nicely steamed up :) ). More importantly a top up could be achieved at an 'energy station' (no longer selling just petrol/diesel) in a matter of seconds (possibly even faster than filling with petrol). The heated water/steam can be produced using 'green' electricity. There is no need for mega amounts of very rare 'rare earth metals' for batteries and motors. Further the technology is tried and tested (fireless steam locomotives existed for use in dangerous places like munitions works, coal mines, gas works, flour mills etc etc ). It would be cheap and simple to put together, no real chance of any patent wars (fireless locos are not new, steam cars are not new...)
Some people are probably already whining on about the dangers of a pressure tank - but come now batteries do explode really spectacularly when shorted out as could happen in an accident, petrol and gas can go bang quite well and we cope with that danger - a pressure tank can be built really quite solidly - as was demonstrated occasionally when a steam train derailed and fell off bridges or down embankments without blowing the boiler up.
Time to consider a better alternative and stop pandering to the bull that says it can't be done... steam can be done, fireless or otherwise - fireless can save a lot of CO2. It is not beyond our whit to get together a group to build one!