Every car and truck company in the world are trying to save money at the moment by developing electric motor'd cars and stop/start trucks to cut fuel consumption to reduce their CO2 emissions.
This is all well but fuel prices are still on the rise and there is only 1 company that I know is planning the future. This is Fisker Automotive.
The reason is that they use a petrol engine purely only for the recharging of the in-wheel electric power hubs to propel the vehicle.
Now this can be used on all vehicles, trucks and cars alike.
I know the cost is higher but it does define the future of road cars.
I.e. a DAF LF truck would be a perfect example as it would reduce consumption of the overall truck.