06-17-2007Police are investigating an assault claim against a millionaire businessman after he was secretly filmed throwing rocks at a gardener cutting down a tree on a property in Sydney's most valuable residential street.Car-wash king Anthony Sahade - owner of the Crystal Car Wash chain - was filmed on a camera phone screaming abuse and throwing handfuls of rocks at the arborist, who was suspended metres above the ground while removing a tree on a neighbouring property.The furious exchange took place on Wolseley Rd in Point Piper where Mr Sahade paid $11.25 million last year for his waterfront home.In the footage Mr Sahade seems infuriated that the gardener is attempting to cut down a tree in his neighbour's yard.The film begins with a relatively calm-looking Mr Sahade telling the man to get out of the tree."You go and get a permit for that, you go and get a permit,'' he says. "Mate, just get down out of the tree.''Within seconds Mr Sahade, oblivious to onlookers, starts to swear at the gardener before picking up rocks and throwing handfuls at him."F****** get down,'' he says."That's all right - go again, and you watch where the next rock is going to hit.''Mr Sahade then throws more rocks as the gardener starts up the chainsaw.The gardener, who stayed in the tree during the tirade, contacted police in the middle of the dispute.George Palmer - the gardener at the centre of the dispute - delivered a copy of the video to Rose Bay police last December. A police spokesperson last week said they were investigating the complaint.The short-tempered car cleaner is no stranger to controversy. Mr Sahade brought a Woollahra Council meeting to a standstill last month when he yelled at the mayor and councillors from the public gallery.Challenging the council's decision to refuse advertising signs at Mr Sahade's Rose Bay car wash, the businessman told the meeting he would build a mosque on another of his sites in Rushcutters Bay.Mr Sahade declined to comment on the allegations.