Concerned he was preparing to flee, the officer drew his Taser but it was not enough to stop Bowler's hasty retreat.
While putting the vehicle in reverse, he was tasered for the first time, as his vehicle slammed into the police car from behind.
As Bowler changed gears he received another jolt of electricity but continued on towards the carpark's exit.
Only when he saw other police cars did he stop.
A search of his vehicle turned up a tomahawk behind the driver's seat, 0.2g of meth in a door well, and knuckle dusters were also found in his pocket.
Counsel Steve Turner said it was "not a clean car" and the axe, which was in the back with other tools, had been for work purposes.
Bowler said the knuckle dusters had been given to him that day and Turner stressed he never presented them at police.
While the defendant had a previous conviction for possessing a rifle without a licence, it was his only weapons charge.
Similarly, he had domestic violence peppered across his record, but little that indicated repeated conflict with police.
"This is out of character," said Turner.
The court heard the constable who was spat at did not miss any work but was required to undergo a blood test.
Bowler later apologised for the act and shook hands with the victim.
He was convicted of assaulting police, two counts of possessing a weapon, resisting, possessing methamphetamine and a charge under the Search and Surveillance act (for not handing over his cellphone access code).
He was sentenced to 120 hours' community work.
