Police were called to reports of a collision between a Fiat Punto and a woman in Broad Street, March.
The incident happened at about 10.55am on Friday July 25.
The pedestrian, aged in her 90s, suffered serious injuries and remains in Hinchingbrooke Hospital in Huntingdon.
The woman is from Doddington.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here