A 41-year-old local man, believed to be the driver of the car, was arrested for grievous bodily harm at the time.
This is now being treated as a homicide investigation by Surrey and Sussex Major Crime Team working in conjunction with colleagues in West Sussex Division.
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Thursday afternoon's weather for the east of the region
Thursday afternoon's weather for the west of the region
3,000 tonnes of rubbish caught fire at the Averies Recycling Site in Swindon in July 2014 - taking eight weeks to put out.