Why is the Safety Car not an F1 car?

You will often hear Formula 1 drivers complain that the Safety Car is going "too slow" or their engines are "too hot" when they are stacked up behind the car for a couple of laps.

Drivers mainly want to get heat into the tyres and they have to stick to the pace of the Safety Car, which often conflicts with their preparation for a restart.

So why not have the Safety Car be another F1 car instead of a tuned up road car? The answer is quite simple and answered in this video below.

Check it out!