Illustration by Andre Castaigne for article “The Brennan Mono-Rail Car,” McClure’s Magazine, 1910
A proposed elevated line running from Washington to Boston based on the gyroscope-balanced monorail car Irish-Australian inventor, Louis Brennan. His model, introduced in 1909. while successfully demonstrated, never reached mass production.
Amtrak’s Acela tilting trains can reach 150mph. Brennan said his might reach 200mph.