and bought a camera.

Essentially plug & play its hard-wired into the ignition, starts up on key, and captures everything in front of bonnet in a continuos loop
this takes about a fortnight to complete with a 32GB card installed and can be reviewed at any time either on a PC or via small screen included with camera,
the one pictured is ebay at around £15,
so a no-brainer really with so many imbeciles on the road waiting to throw themselves beneath your wheels for some compensation