In this enlightening discussion, we engage once more with the esteemed Kyle Kirschling, who elaborates on his groundbreaking project, Gravitator, which seeks to revolutionize urban mass transit through innovative infrastructure. Kirschling shares his insights on the paramount importance of enhancing speed and efficiency in transportation systems, contending that such advancements can significantly expand opportunities for urban dwellers. He draws upon his extensive experience with the New York City subway and articulates how leveraging gravity can facilitate rapid transit while maintaining passenger comfort. Furthermore, we explore the economic ramifications of such infrastructural developments and the potential for private investment in transportation systems, a topic of considerable significance in contemporary urban planning. Through this discourse, we aim to illuminate the intersection of transportation, infrastructure, and economic viability, providing listeners with a profound understanding of the challenges and opportunities that lie ahead in urban mobility.Show notes with links to articles, blog posts, products and services:OUR "GROUNDBREAKING" 50TH EPISODE! - The Secular Foxhole podcast1898 Bird's Eye View of Chicago - Wikimedia Commons Gravitator dot cityGravitator | 2X the Speed, 1/2 the Cost of a Subway | Transit That PaysMaking Infrastructure Pay on YouTubeKyle M. Kirschling on LinkedInEpisode 112 (51 minutes) was recorded at 2200 Central European Time, on June 21, 2026, with Alitu's recording feature. Martin did the editing and post-production with the podcast maker, Alitu. The transcript is generated by Captivate Assistant.Easy listen to The Secular Foxhole podcast in your podcast (podcatcher) app of choice, e.g., Apple Podcasts, Spotify, Amazon Music, Listen Notes.Even better is to use one of the new podcast apps, on Podcast Index, supporting the Podcasting 2.0 initiative, and