Auto dealers say gas prices are driving increased sales for new fuel-efficient cars. But if you're in the market now, get ready to hurry up and wait.

According to new Federal guidelines, the 2008 Honda Civic Hybrid gets 45 miles to the gallon in highway driving, but the only one on the lot at the Bob Lindsay dealership is already sold.

Sales Manager Mike Bowermaster said, "It is a thirty day wait for the new Civic Hybrid."

Officials at the Peoria SUDS Dealership say customers are already coming in and asking about the new Volkswagon Jetta Diesel.

Volkswagon is promising 45 miles a gallon with the Jetta. It goes on sale in September.