The wife of a motorcyclist seriously injured in a crash near Stroud has urged a second biker to come forward.
Police are still trying to trace the rider of a "large powerful machine" seen overtaking a lorry on the A419 at the time of the incident last Friday.
Roger Axell, 56, from Oxfordshire, remains in intensive care after his motorbike and a van collided.
"If you think it was you, if you know it was you, just go and talk to the police", said Josephine Axell.
Mr Axell became trapped after his red Harley Davidson motorcycle and a white Ford Transit van were involved in a collision at about 1210 BST on 8 April.
He is being treated in Bristol's Frenchay Hospital.
His wife listed his injuries as "two broken legs, a broken pelvis, the top half of his rib cage is smashed in, both his lungs are collapsed, both collar bones are broken and his left eye is messy".