Mark VI monorail

The Mark VI monorail (Mk6) is a monorail train used in the Walt Disney World Monorail System and the Las Vegas Monorail. The Mark VI started replacing the Mark IV monorails at Walt Disney World in 1989, replacing the final Mark IV by 1991.^[1] The Mark VI later replaced the two ex-WDW Mark IV monorail sets of the Las Vegas Monorail (then named the MGM Grand-Bally's Monorail) in 2004. The Las Vegas M-VI versions of the trains differ from the Walt Disney World trains in physical appearance and the fact that they are automated, a trait the Walt Disney World monorails lacked until their automation starting in 2014.