What are the car companys doing?

Not all green cars are expensive. A new Honda Fit is about 15,000, and so is a Nissan Versa. Both are very economical & low emissions. Hybrids are not oging to be cheap anytime soon because of the cost of the batteries. Until a new technology comes out for better/cheaper batteries, they will always be more expensive. If your older car is economical already, just keep it tuned up, tires properly inflated, oil changed frequently, and use crusie control as much as you can.