A system, comprising: an instrument display panel configured to display infographics associated with parameters of a motor vehicle; and, an electronic control unit programmed to position each of the infographics within the instrument display panel, characterised in that , the instrument display panel includes a 3-D autostereoscopic parallax display which emits directionally-varying image information to present a 3-D image to a user, and the instrument display panel is configured to define a plurality of virtual display planes positioned at different apparent depths within the display panel; and, the electronic control unit is programmed to position each of the infographics at an apparent depth within the instrument display panel dependent on their priority, wherein higher priority infographics are displayed at negative parallax positions and lower priority infographics are displayed at positive parallax positions, wherein a first infographic comprises a speedometer of the motor vehicle, the electronic control unit being programmed to position the first infographic in a first apparent display plane, wherein the electronic control unit is programmed so that infographics of one or more critical parameters are normally displayed in apparent display planes having a greater apparent depth than the first apparent display plane, wherein the electronic control unit is programmed to choose an infographic of highest priority in dependence upon information received by the electronic control unit as to which of any one of the one or more critical parameters is faulty or does not comply with a predetermined value or range of values, and wherein the electronic control unit is programmed to position the infographic of highest priority in an apparent display plane in front of the first apparent display plane having a lesser apparent depth than the first apparent display plane without obscuring the user's view of the speedometer infographic. an instrument display panel configured to display infographics associated with parameters of a motor vehicle; and, an electronic control unit programmed to position each of the infographics within the instrument display panel, characterised in that , the instrument display panel includes a 3-D autostereoscopic parallax display which emits directionally-varying image information to present a 3-D image to a user, and the instrument display panel is configured to define a plurality of virtual display planes positioned at different apparent depths within the display panel; and, the electronic control unit is programmed to position each of the infographics at an apparent depth within the instrument display panel dependent on their priority, wherein higher priority infographics are displayed at negative parallax positions and lower priority infographics are displayed at positive parallax positions, wherein a first infographic comprises a speedometer of the motor vehicle, the electronic control unit being programmed to position the first infographic in a first apparent display plane, wherein the electronic control unit is programmed so that infographics of one or more critical parameters are normally displayed in apparent display planes having a greater apparent depth than the first apparent display plane, wherein the electronic control unit is programmed to choose an infographic of highest priority in dependence upon information received by the electronic control unit as to which of any one of the one or more critical parameters is faulty or does not comply with a predetermined value or range of values, and wherein the electronic control unit is programmed to position the infographic of highest priority in an apparent display plane in front of the first apparent display plane having a lesser apparent depth than the first apparent display plane without obscuring the user's view of the speedometer infographic. <EOS>