Greyson is an avid cyclist and has biked thousands of miles, experiencing first-hand how different cultures and political systems design their built environment. He has practiced as an urban planner in both London and New York, with work spanning transportation planning, master planning, stakeholder engagement, and the planning, design, and delivery of major infrastructure projects. He is a senior consultant at Guidehouse, working mostly with the US Department of Transportation’s Federal Transportation Administration. His favorite project has been helping to improve the FTA's grant program which funds transit-oriented development studies across the country.