It is not clear (at least to me) whether you want to drive the original (vintage) indicators on the vehicle, or if you want to replace them with new indicators?
All of those sensing scenarios are well-represented by Arduino solutions: Tachometer (engine RPM, ground-speed), temperature, pressure, resistance, voltage etc.
If you arrange some new transducer for ground-speed, then you will need to "calibrate" it. Perhaps as simple as using a mathematical ratio of pulse-count to distance, etc.
Calibrating a temperature sensor can be as simple as using an ice-water bath to establish 32F/0C and boiling water to establish 212F/100C. Assuming the sensor is reasonably linear between those points (and beyond boiling, etc.)
It is easy enough to drive those vintage galvanometers from a microcontroller (Arduino, et.al.) using pulse-width modulation. You will probably need an external transistor driver to achieve the current necessary for that low-impedance coil.