James Armstrong, 35, of Brockenhurst, Hampshire, admitted counts of dangerous driving and failing to report an accident when he appeared in the Magistrate’s Court.
He received a suspended prison term.
The incident happened at about 7.25pm on Sunday 1 February.
In a statement, a witness said that the defendant had drank three pints of beer with them that afternoon from 3pm and had said he would be walking home.
Prosecuting Advocate Liam Roffey said there was no suggestion that the defendant was over the prescribed alcohol limit at the time of the crash.
Another witness told police how they had seen the Porsche ‘zig-zagging crazily’ in the car park at Salerie Corner. On leaving it, the defendant drove over the central reservation and the witness told of how they had jumped back to avoid being hit.
Another witness who was driving at the time saw the Porsche drive over the central reservation and collide with a bollard near The Foresters pub. It then collided with three or four parked vehicles before hitting two more. The witness got out of their vehicle, but the defendant had left the scene before they could speak to him. Police found the Porsche, which was heavily damaged, outside the defendant’s then home address but he was not at home. He attended at the Police Station voluntarily the following day.
The only matter on his record was a drink-driving conviction in the UK in 2011.
Defending, Advocate Samuel Steel said his client had borrowed the car from his employer and it had been more powerful than his own. He recalled it accelerating rapidly and hitting the central barrier before the airbags inflated in his face.
He was overwhelmed at the time which was why he had left the scene, but he had returned to Guernsey to face the music.
Advocate Steel said that Armstrong had moved to the island in October last year and had ‘fallen in love’ with the community. But he had lost his job following his arrest and was no longer able to stay in the island. The pending case meant he had not been able to get a new job. His previous drink-driving conviction had happened when he was 20, and he had only just been over the limit.
Judge Marc Davies said the defendant was not being sentenced for drink-driving.
‘But that is the only other matter on your record and that should have been in your mind in February,’ he said.
‘I have to protect society from those who drive dangerously and this was a serious example of it.’
A number of people had woken up the next day to find their vehicles badly damaged and it was fortunate that nobody had been injured, the judge said.
Prison sentences of three months and one month concurrently, suspended for 12 months, were imposed for the dangerous driving and failing to report the accident respectively. Driving bans of 12 months and three months, to run concurrent, were also meted, which Judge Davies said would also apply to the defendant in the UK.