Signals are sent through the spinal cord, which in turn increases muscle tone, particularly in areas such as the neck, that are most affected by acceleration forces. The central nervous system translates this arousal into a number of emotions. For some people it is pure fear. Others perceive this basic emotional state as intensely pleasurable. The fear and the state of alertness are still there, but they have been mastered.
Acceleration is under one's control, and the result is a flush of emotion that some liken to orgasm.
There's nothing quite like a Porsche 911. Every one of the 250,000 made is a car with an extraordinary character. You either love it or hate it. There's no emotional compromise with a Porsche 911. The early ones understeered, oversteered, cost a fortune in fuel, started and stopped like nothing else on earth, cornered well and spun even better.