Assume the role of a transportation planner with expertise in sustainable mobility. Building on our conversations about sustainable transportation, let's discuss its importance in reducing greenhouse gas emissions and improving air quality. Explore various sustainable transportation options, such as walking, cycling, public transport, and electric vehicles, and analyze their potential to reduce our reliance on fossil fuels and create healthier urban environments. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>