Hybrid cars! Do they really save money for consumers?

Hybrid cars certainly save gas, but it's debatable whether they save money for consumers. the question lies with how the price of gas will become in the future. Several people say that right now gas is not expencive enough compared to the money one would pay for a hybrid car. Do you think in years to come the price of gas will cause the demand for hybrid cars to rise? If the price of gas does rise will the price of hybrid cars fall?