"The Audi was a car I never thought I'd own and have put a lot of time, love, and money into," he said.
"It was such a terrible sinking feeling when I went out to find an empty parking spot."
The stolen car was then driven past Abernethy's house at least four times, with him unable to do anything but call the police.
"My car has a very distinctive sound so I heard it each time.
"At first I was really angry I hadn't woken up but then I realised that maybe it was better that I slept through the burglary.
"Who knows what could have happened if I had woken up."
The family then watched as the police Eagle chopper tracked the speeding car through the surrounding area.
Police confirmed they had arrested a man in a stolen vehicle later that morning. The man was taken into custody.
Road spikes were used to stop the car during the pursuit which ended on Horsham Downs Road.
Abernethy was relieved to hear police had made an arrest and his car was recovered - albeit very damaged.
"I feel overwhelmed with gratitude and respect for the incredible people that are putting their lives on the line on a daily basis to keep our communities safe and uphold justice," he said.
"I'm grateful it was resolved without anyone being seriously injured, as far as I know."