The results further reported three forms of expectation: cost,comfort, and safety. However, the cost and safety expectations mayinfluence the possibility to support eco-friendly fuel vehicles, whilethe comfort expectation has no significant influence on the supportof eco-friendly fuel vehicles. On the other hand, the cost expectation influences public decision to purchase electric and biogas vehicles. Thus, this research clearly indicates a significant attentionfrom the potential customers about the low-cost expectation toward the fuel and the vehicle price, and this aspect is central toencourage them in not only supporting but also purchasing ecofriendly fuel vehicles. In fact, studies based on cases from theNetherlands have demonstrated that comfort regarding thecharging station, as well as the technology readiness (Rasouli andTimmermans, 2013), may contribute to the support to the ecofriendly fuel vehicles. Nonetheless, this study further adds ourunderstanding that the low-cost expectation is the significant factor that drives people's willingness to purchase the eco-friendlyfuel vehicles.