Never mind replacing your helmet, get a proper medical to determine any injuries (future injuries/ailments) first and foremost, also get pictures of any injuries you have, keep them all together for a potential claim against this driver.
As for the bike, as previously mentioned by others get it checked out by a decent LBS, ANYTHING marked that previously wasn't marked should be quoted, therfore replaced.
This stupid/careless/thoughtless/driving without due care/dangerous idiot driver could have KILLED you, don't forget that.
Just saying how it is…