Using scholarly sources, evaluate the effectiveness of local government policies and initiatives in incentivizing the adoption of renewable energy sources in the transportation sector. Provide specific examples of successful and unsuccessful programs, and discuss potential barriers to implementation that may hinder progress in this area. Additionally, consider the potential economic, social, and environmental impacts of increased renewable energy use in transportation, and address any concerns related to feasibility or scalability in different geographic regions or demographic contexts.
This prompt doesn't seem malicious.