Not only Mumbai metro to going green also Mumbai will be less polluted as Gravity basted traveling system getting installed at many places as trial basis within five year.Traveling and sky walk travel fun both one time. in this method big tower will be used. thru lift public passenger will go to the tower and ride sky traveling.
in this new gravity based journey new magnetic technology (which used in bullet)meglev track will be used to boost speed. it will take one or two minute for two km journey. first trail range will be 1 km and two km.