This is Lego's 8070 Supercar model that I had built almost a year
ago now. It has working steering, a v8 that has moving pistons when
the rear wheels turn (the rear wheels are connected with a
differential gear), shock absorbers and mainly motor-driven doors,
hood and rear spoiler. A gear selector switch engages the gear that
controls a particular part (i.e. open/close the hood). A single
medium power functions motor and battery box drive the whole thing.
However the drivetrain and steering are not motorized. There are
methods to make them motorized with two additional medium motors and
a IR receiver. Problem is that it is best to do this modification
when the car is first built. It is very difficult to do after it is
built since it is built very strong and not easy to disassemble. I
also added a set of LED lights to liven it up a little. 6 LEDs at
the front for headlights, a pair for the engine compartment, another
pair for the rear and last a pair on the rear spoiler. I don't show
it but the LEDs can be set with different flash patterns than just
'always on'.