The backwards drivetrain/steering is kind of fascinating to consider. I'd love to see someone like Colin Furze or Stuff Made Here actually make one to try it out. What would it be like to ride a bike that steered by pivoting the back wheel?
Would be interesting videos. Makes me think of how you have to maneuver a shopping cart if pushing backwards; as the rear wheels are fixed and front wheels rotate. At high speed it would be dicey, too easy to oversteer