G. Amba Prasad Rao, PhD, is a Professor of Mechanical Engineering at the National Institute of Technology, Warangal, India. With over 30 years of teaching and research experience, he has had many roles over the years, including associate dean, faculty advisor, lecturer, among others. He was the founding coordinator for the MTech degree in Automobile Engineering at NIT Warangal. He has published book chapters and technical papers in international journals. He has given a number of presentations on internal combustion engines, alternative fuels, and emission control and has organized several conferences and short-term programs. T. Karthikeya Sharma, PhD, is Assistant Professor and Head of the Department of Mechanical Engineering at the National Institute of Technology, Andhra Pradesh, India. He is specialized in internal combustion engines, refrigeration, and air conditioning and has been involved in computational fluid dynamic analysis of combustion in IC engines. He is a member of various professional bodies and a consultant engineer for several research laboratories. He has published research articles on pre-mixed HCCI combustion analysis. He, along with his student, exhibited a manual transmission system for hybrid vehicles at a festival of innovation held at Rastrapati Bhawan, New Delhi, India. Dr. Karthikeya has received awards and citations for excellence as a researcher and as an engineering educator.