The units for cars would be "cars."
in a car which unit is asector shaft part of
It depends on the model of the GPS unit and the model of the car. You should be able to get a portable GPS unit to add to the car yourself for about $200, or you can have your car dealer add the unit.
A kilogram
sending unit for what, kind of car engine what sending unit
You would measure the length of a car in metres. An average car is about 4m
mass
passenger car unit
You would measure the length of a car in metres. An average car is about 4m
Gallons.
A meter.
carat
That depends what aspect of the car you want to measure: for example its length, volume, mass, weight, color, etc.