I was a witness to a felony , I'm willing to give my statement but not willing to go to court can they legally make me ?

I was driving around with my friend in his car and his friend but we were in the back seat while his friend was driving around hitting mailboxes , the friend driving is wanted for murder and has charges against him . I'm willing to give my statement that he was driving and supposedly had been drinking , but I was the only one in the car who is under age . however I do not want to have go to court is there any way that I wouldn't have to ? or could they possibly charge me with anything ?