The country’s largest car maker Maruti Suzuki today unveiled its flagship CNG engine technology, ‘intelligent-Gas Port Injection’ or i-GPI on five popular models. The models include SX4, Eeco, WagonR, Estilo and Alto and are being launched in Delhi NCR, Mumbai and Gujrat. With this initiative, the CNG footprint of the company spreads across entry level cars, compact cars, sedans and MPV segments.