The two cannabis advocates behind last year's 4/20 projection stunt at Sydney Opera House have launched another public demonstration, this time taking to the streets during the morning rush hour.
Their chosen vehicle this time was a tank, joined by a convoy of military vehicles making their way through peak-hour Sydney traffic.
Alec Zammitt and Will Stolk, who are facing criminal charges for the Opera House prank, led a fleet of military vehicles through the city to draw attention to drug-driving laws they say unfairly target medicinal cannabis users.
Operating under the slogan 'Who are we hurting?', the convoy crossed Sydney Harbour Bridge, passed the Opera House, and stopped at various media outlets to press their case against what they consider discriminatory driving legislation.

NSW Legalise Cannabis MP, Jeremy Buckingham, joined the motorcade, just hours after his election was confirmed.
"This visual statement aims to highlight the need for a new approach to drug-driving policy, one that prioritises harm reduction and treatment over punishment and incarceration," Zammitt said ahead of the stunt.

"Driving with THC shouldn't make you an enemy."
The 4/20 action is part of a broader campaign by the pair against the ongoing 'war on drugs', which Stolk argued is a fight that cannot be won.
"The 75-year war on drugs hasn't worked and has cost the taxpayer billions of dollars fighting a war that cannot and will not ever be won," he said.

He went on to argue that legalising cannabis would generate a "huge amount of money" from taxation that could be directed toward healthcare, schools and roads.
Earlier this year, Zammitt and Stolk took out billboards across NSW protesting against the state's drug-driving policy.