According to the recent reports that have come out of the UN and other scientific bodies, we do not have time to wait for the development and commericalization of new technology. However, there are things we can do now to help the environment.
The main thing we can do immediately is to institute telecommuting and flexible hours. Without any new R&D, our society can reduce the emissions due to people idling in gridlock traffic. Many people could shift their hours to drive after the rush hour. Also, many jobs can be done at home, or can be apportioned so that a person can work at home one or two days per week. This does not cost any money. It will save everyone money on gasoline and highway wear and tear. What is needed is a change in attitudes.