An in-vehicle system comprising: a display device; and an interface system communicatively connected to one or more vehicle sensors (120, 122, 124; 222), the interface system configured to: receive sensor signals from the one or more vehicle sensors (120, 122, 124; 222), transmit the sensor signals to a mobile device (128; 208), receive control signals from the mobile device (128; 208), and transmit the control signals to a target vehicle system, the control signals being generated at the mobile device (128; 208) responsive to the mobile device (128; 208) processing the sensor signals from the one or more vehicle sensors (120, 122, 124; 222), wherein the display device and the interface system do not include an operating system, wherein the display device is communicatively connected directly to the mobile device (128; 208) and configured to receive display signals directly from the mobile device (128; 208) without a processor processing the received display signals, or wherein the display device is communicatively connected to the mobile device (128; 208) via the interface system, and the interface system is configured to transmit display signals received from the mobile device (128; 208) to the display device while bypassing any processor in the vehicle. a display device; and an interface system communicatively connected to one or more vehicle sensors (120, 122, 124; 222), the interface system configured to: receive sensor signals from the one or more vehicle sensors (120, 122, 124; 222), transmit the sensor signals to a mobile device (128; 208), receive control signals from the mobile device (128; 208), and transmit the control signals to a target vehicle system, the control signals being generated at the mobile device (128; 208) responsive to the mobile device (128; 208) processing the sensor signals from the one or more vehicle sensors (120, 122, 124; 222), wherein the display device and the interface system do not include an operating system, wherein the display device is communicatively connected directly to the mobile device (128; 208) and configured to receive display signals directly from the mobile device (128; 208) without a processor processing the received display signals, or wherein the display device is communicatively connected to the mobile device (128; 208) via the interface system, and the interface system is configured to transmit display signals received from the mobile device (128; 208) to the display device while bypassing any processor in the vehicle. receive sensor signals from the one or more vehicle sensors (120, 122, 124; 222), transmit the sensor signals to a mobile device (128; 208), receive control signals from the mobile device (128; 208), and transmit the control signals to a target vehicle system, the control signals being generated at the mobile device (128; 208) responsive to the mobile device (128; 208) processing the sensor signals from the one or more vehicle sensors (120, 122, 124; 222), wherein the display device and the interface system do not include an operating system, wherein the display device is communicatively connected directly to the mobile device (128; 208) and configured to receive display signals directly from the mobile device (128; 208) without a processor processing the received display signals, or wherein the display device is communicatively connected to the mobile device (128; 208) via the interface system, and the interface system is configured to transmit display signals received from the mobile device (128; 208) to the display device while bypassing any processor in the vehicle.