We’re seeking witnesses to a single-vehicle collision on the M5 in the early hours of Monday 14 October.
The crash happened at about 12.42am between junctions 22 for Burnham-on-Sea and 21 for Weston-super-Mare.
An orange three-door VW Polo collided with the central reservation. The occupants fled the vehicle before officers arrived.
We want to hear from anyone who saw how the orange Polo was being driven in the moments leading up to the collision, or who saw people in the carriageway immediately afterwards.
If you can help, get in touch quoting reference 5219237547.
A man was arrested nearby and released under investigation.
If you can help, please call 101 and give the call handler the reference number 5219237547