Getaway cars crash, killing 'robber' TWO alleged robbers trying to get away from police in a southern Perth suburb were involved in an horrific crash that killed one of the men. Eyewitnesses say they saw the driver of one of the cars killed instantly in the collision, which police say followed the earlier assault and robbery of a 50-year-old man in a neighbouring suburb. Police say the man was a 28-year-old Willagee resident who'd been involved in the attack along with an 18-year-old man from Munster, who had fled the scene in another car before crashing into his partner in crime. The Holden Commodore and Holden Astra collided at the intersection of Harris and Pembroke streets at Bicton early on Tuesday evening. Resident Stephen Pickford captured the smash on a previously installed video camera, which he had pointed at the intersection. Mr Pickford said he had foreseen a tragedy involving hoons who frequently sped down Bicton's wide streets. Police have since seized the footage. "It was like an explosion," Mr Pickford told ABC radio on Wednesday. Police said the two men had allegedly earlier assaulted a 50-year-old man at nearby Point Walter and stolen his electric mountain bike. The 18-year-old man fled the scene in the Commodore while the 28-year-old drove away in a Holden Astra. Police saw the Commodore and chased it briefly after an unsuccessful attempt to pull the driver over. After the chase was aborted, the car wound through the back streets of Bicton and was again spotted by police. The Commodore went through a stop sign and t-boned the Astra, police said. It's understood that police had engaged the Commodore in a second brief pursuit before the crash, but eyewitnesses said the officers were driving in a controlled manner at a reasonable speed. They said the crash was horrific, with the smashed Astra sliding 30 metres down the road on its side before hitting four paperbark trees. "The car basically disintegrated," Mr Pickford said. He said the trees had saved he and his wife's lives as they sat on their front verandah watching the tragedy unfold. After the initial collision, the Commodore was flung 50-60 metres down the street before spinning around, he said. The 18-year-old driver tried to flee, but was chased by neighbours and pinned to the ground. Residents had been calling for speed humps and roundabouts in the area for some time, Mr Pickford said. "We knew this would happen," he said. People quite regularly go through that stop sign. The 18-year-old offender will appear in Fremantle Magistrates Court later on Wednesday charged with several offences including dangerous driving causing death and aggravated robbery.