​The train will have four stations, including one at the cargo terminal, which are also expected to provide seamless connectivity with Metro lines. Delhi International Airport Pvt Ltd is currently working on financing the “automated people mover” (APM) project, expected to cost Rs 2,000-2,500 crore.

from Times of India https://timesofindia.indiatimes.com/business/india-business/air-train-plan-to-connect-igi-terminals-set-to-take-off/articleshow/68605489.cms