Gas for cars

I was listening to the news and John Hofmeister former President of Shell Oil company caught my attention. He said we can expect rising oil prices which equate to rising gasoline prices. When asked how to stop this he responded by saying that we need to go to natural gas for our transportation needs. This is the first time I have heard anyone on national news suggest that. There are 24 million natural gas vehicles in the world and 160,000 of those in the United States.