Thankfully, the couple inside managed to pull the car over before escaping without injury. Unfortunately, the F40 wasn't so lucky in avoiding injury.
The cause of the fire remains a mystery, but some have guessed that a loose fuel hose would be to blame. If this caused fuel to make contact with a hot exhaust, fire is almost the only outcome.
Just last year we saw an almost identical scene on the streets of Monaco when an F40 burnt to the ground. The reason behind this blaze was never revealed, but we can imagine it'd be along the same lines.