The speedometer is feasible, rotary encoder is the magic word. displaying that (RPM) as well as the calculated speed and some voltage readings should be not problem either.
A bit more problematic is the camera feed on the same display. An Arduino is not made to transport that amount of data to displays (usually connected with some serial interface). It's probably easier to leave the video stuff separated from the measurement stuff (which is more the area of microcontrollers as the Arduino is).