AETs are imperative to mitigate the twin crisis of environmental degradation and simultaneous fossil fuel depletion, there are wide concerns about GHG emissions which have paved ways for the development and deployment of energy technologies that do not use fossil fuels. These technologies would provide tangible benefits in terms of fossil-fuel costs, which are likely to increase as restrictions on GHG emissions are imposed. However, a number of challenges need to be overcome prior to market positioning, and the commercialization of alternative energy technologies which require a staged approach given price and technical risk. An unconventional new alternative technology is one possibility, where one could undertake cost-reducing production enhancement measures as an intermediate step prior to deployment. This paper explores the factors affecting the use of AETs in automobiles further includes in depth analysis and results obtained from real time experiments conducted on AET based automobiles. This paper empirically examines the preferences for alternative energy sources or propulsion technologies in vehicles. In order to simulate a realistic future purchase situation, the following alternative technologies i.e. hybrid, gas, biofuel, hydrogen, and electric vehicles were considered besides common gasoline and diesel vehicles. The estimation results reveal that younger potential car buyers have a higher stated preference for biofuel and electric vehicles, males have a higher stated choice of hydrogen vehicles, and environmentally aware potential car buyers have a higher stated preference for hydrogen and electric vehicles. These results suggest that common policy instruments such as the promotion of research and development, taxation, or subsidization in the field of electro mobility could be supplemented by policies to increase the social acceptance of alternative vehicle types that are directly oriented to these population groups.