Pneumatic wheels, filled with air pressure like modern car or bike wheels, and the straddle-beam design allow the cars to ride atop the beam instead of hanging below it like the German inspiration.

Concept art, shared with Insider, shows a very different early design for the Disneyland monorail from 1954. The book is available now for $32.99. Visit Insider's homepage for more stories.

Defective ball-bearings caused a train wheel to fall from the elevated Yellow Line monorail onto a taxi on Tuesday evening, according to the monorail operator. Eastern Bangkok Monorail Co (EBM ...