Waving its ’legs’ like an giant insect above visitors to the VDEI show in Münster (RG 6.06 p339) was the Menzi Muck A91 4x4 Plus road-rail machine. Each road wheel is on an independently-movable hydraulic leg, and with the aid of spiked supports and its jib the machine can climb from ground level onto two rail trolleys. The rubber tyres then propel the A91 along railway tracks using friction drive against rollers on the trolleys. The legs provide stable support for the machine during work on uneven ground and on the sides of embankments Menke, Germany