This is a good topic and one that I enjoy discussing with people.
I am all for the blip here and there when conditions permit. Conditions being;
Good weather
late at night
good visibility
well lit
No other motorists / pedestrians
But, that said, theres always the unknown on a public road, a well obscured pot hole, some numpty in the bush having a piss.
Its critical to have good knowledge of your own ability and the ability of your car and not exceeding either. This is where having a late night squirt comes undone for people, they go too hard or their ego takes over.
I don't believe "driving" is a blanket ability for people. Restricting good, self-aware drivers to the same rules and regulations as the elderly with their poor driving history (and their learning to drive in very different circumstances) or as the 21 year old in a car with too much gumption and a back seat full of buddies.
Driving and driving ability is not blanket - it shouldn't be applied to everybody evenly.
At the end of the day, dudes with quick cars who take a calculated risk are seen by the public and the law as one-and-the-same as Petey P-Plater in his "hoon vehicle" - there is no difference. Unfortunately, when mr Calculated Risk gets caught, it plays right into the hands of the anti-hoon movement and the police attitude towards car lovers.
But, to address the initial question - Yes, I believe there is 'safe speeding'. But, I don't believe everybody is clever enough to determine, for themselves, the best time to speed safely.