Paul Walker's car collection has reportedly gone on sale.

The roar of high-performance car engines filled the air as thousands of fans, friends and car enthusiasts descended on a Los Angeles suburb to pay tribute to Paul Walker at the site where the Fast & Furious actor died in a fireball car crash.

Paul Walker's family and friends held a private memorial at the site of his car crash on Monday night.

Paul Walker's last words before his death were: "Let's go for a drive."