On 28 Feb 2005 13:25:02 -0800, jim rozen
wrote:

In article , Robert Swinney says...

Jim,

Does this mean 1000 pf is the capacitance of two cars very close together
with each forming one plate of a capacitor?

With the earth in between. The implication is that
one car to ground is about 2000 pf. This is within
a factor of two from a simply calculated value, with
10 cm being the separation, and 10 sq M of plate area.

What this says is that at 1 MHz, the car body is coupled
to the ground via an approximately 80 ohm resistor.

Reactance rather than resistance. You knew that!