Another step towards eco rehab. In response to consumer demand, Enterprise Rent-A-Car, on Wednesday, launched four new "green branches" in Atlanta. With gas prices due to hit $4.00 gallon by summer hybrids or other fuel-efficient vehicles will make up 60 percent of their inventory. "At the end of the day, it's the consumer that drives rental fleeting," said Neil Abrams, president of Abrams Consulting Group Inc., a rental car industry consultancy. "Rental car companies can buy a lot of cars their customers don't want to drive, and they'll be sitting in a lot and gathering dust."