Ok first, I'm (we're) glad you are alive. Did you go to a doctor to get checked out???
If not do so. Second go to the police and report the incident. color of car, type of car, etc etc. It most likely won't get the person, but....... By chance, did you get the name of the witness (it would help a ton)???
Third, it may be adviseable to report it to your insurance company. It woudl help if you had a police report number to submit.
Fourth, take it to a dealer that can check the balance of the front wheel. Also, they might be able to check for bent components.
Sometimes the handle bars get shifted and you can "sometimes" fix it. Some times not
Next some tips....., were you running with High Beams on???? ( in day light it helps a little) If I think the driver might not see me, I wiggle my handlebars/sterring. It's like flashing the lights but you don't have to find the switch.
Humans see contrasts and changes, a motorcycle heading at them is just a small dot that is not really flashing and does not have much frontal size so there isn't much to contrast against the scenery.