An on-board automotive system comprising: a plurality of processing units (2,3,4); wherein a first processing unit (2,3,4) of said processing units (2,3,4) is adapted to transmit data to one or more of said processing units via a common bus, where the first processing unit has a first convertor unit (11, 12, 13) associated therewith, said first convertor unit being connected to a first bus (14, 15, 16) of the first processing unit from which data is transmitted, said first bus comprising a first plurality of lines, and wherein said first convertor unit (11, 12, 13) is adapted to convert data transmitted therefrom to one or more of said processing units in the form of a first single serial data stream along said common bus; wherein a second processing unit (2,3,4) of said processing units (2,3,4) is adapted to transmit data to one or more of said processing units via a common bus, where the second processing unit has a second convertor unit (11, 12, 13) associated therewith, said second convertor unit being connected to a second bus (14, 15, 16) of the second processing unit from which data is transmitted, said second bus comprising a second plurality of lines, and wherein said second convertor unit (11, 12, 13) is adapted to convert data transmitted therefrom to one or more of said processing units in the form of a second single serial data stream along said common bus; wherein the first bus comprises one of the following: camera serial interface, Peripheral Component Interconnect, PCIe 2.0, PCIe 3.0, HDMI 1.4b, Sata, NVMe, Display Port; CSI II D-Phy, CSI II; GMSL, LVDS, USB 3.0, Reduced Gigabyte Media Independent Interface (RGMII), SGMII, XGMII, XAUI, CAN-FD, Flexray, GPIO, Ethernet, TSN; wherein the second bus comprises one of the following: camera serial interface, Peripheral Component Interconnect, PCIe 2.0, PCIe 3.0, HDMI 1.4b, Sata, NVMe, Display Port; CSI II D-Phy, CSI II; GMSL, LVDS, USB 3.0, Reduced Gigabyte Media Independent Interface (RGMII), SGMII, XGMII, XAUI, CAN-FD, Flexray, GPIO, Ethernet, TSN; and wherein the first bus and the second bus are of different bus design. a plurality of processing units (2,3,4); wherein a first processing unit (2,3,4) of said processing units (2,3,4) is adapted to transmit data to one or more of said processing units via a common bus, where the first processing unit has a first convertor unit (11, 12, 13) associated therewith, said first convertor unit being connected to a first bus (14, 15, 16) of the first processing unit from which data is transmitted, said first bus comprising a first plurality of lines, and wherein said first convertor unit (11, 12, 13) is adapted to convert data transmitted therefrom to one or more of said processing units in the form of a first single serial data stream along said common bus; wherein a second processing unit (2,3,4) of said processing units (2,3,4) is adapted to transmit data to one or more of said processing units via a common bus, where the second processing unit has a second convertor unit (11, 12, 13) associated therewith, said second convertor unit being connected to a second bus (14, 15, 16) of the second processing unit from which data is transmitted, said second bus comprising a second plurality of lines, and wherein said second convertor unit (11, 12, 13) is adapted to convert data transmitted therefrom to one or more of said processing units in the form of a second single serial data stream along said common bus; wherein the first bus comprises one of the following: camera serial interface, Peripheral Component Interconnect, PCIe 2.0, PCIe 3.0, HDMI 1.4b, Sata, NVMe, Display Port; CSI II D-Phy, CSI II; GMSL, LVDS, USB 3.0, Reduced Gigabyte Media Independent Interface (RGMII), SGMII, XGMII, XAUI, CAN-FD, Flexray, GPIO, Ethernet, TSN; wherein the second bus comprises one of the following: camera serial interface, Peripheral Component Interconnect, PCIe 2.0, PCIe 3.0, HDMI 1.4b, Sata, NVMe, Display Port; CSI II D-Phy, CSI II; GMSL, LVDS, USB 3.0, Reduced Gigabyte Media Independent Interface (RGMII), SGMII, XGMII, XAUI, CAN-FD, Flexray, GPIO, Ethernet, TSN; and wherein the first bus and the second bus are of different bus design.