Previously the open world game did not allow this freedom. Thanks to the mod, the camera controls are now no longer bound.
A video released below shows the mod in it’s earlier stages. You can opt for a first or second person view. A nice feature added is off course the support for head tracking which looks awesome.
Some work still remains to be done on the mod though. Turning the camera quickly while driving will destroy the camera’s placement giving you a horrible driving experience.
The mod is available here and there’s also a thread on the official Sleeping Dogs forum.