Magnetic levitation

The idea of magnetic levitation trains, mentioned in a letter published by you on 27th September, is very misleading. The statement, and I quote: "Magnet Trains run on power of magnetic fields created by electricity through wire, rather than electricity itself" is basically incorrect. The magnetic repulsion between the rails and the train eliminates friction, whereas motion is generated by friction between the wheel and rails in conventional electric trains.
Also large amounts of electric power are a must for both traction motor driven or electro-magnet levitation driven trains! Depending on the number of trains on the system and its frequency, anything between 1,000 to 1,500 MW of uninterrupted power supply is a must for either form of urban mass transport system! Unfortunately, this is only a dream for Dhaka, given our miserable quality and quantity of power supply! One pragmatic solution could be an overhead diesel engine driven, rail car transport system.