The new Volvo XC90 Twin-Engine Plug-in Hybrid has a self-programmable mode with four different powertrain settings, three settings for the air suspension, three for the steering, three for the instrument display, two for the brakes, and two for the climate control.

(a) How many differently set cars are possible?

(b) Suppose one owner finds that preference and habit result in narrowing these possibilities to only two of the settings for powertrain, suspension, and steering, just one instrument display, and both settings for brakes and climate control. How many fewer settings does this owner use than are available?