Yeah, I honestly think when something like this happens (reckless driving that leads to death or serious injury), the person should lose their license for life; I don't care if you are 18 or 60. If they are then caught driving afterwards, mandatory jail time.
I don't think throwing the book at someone (i.e., many years in jail) for a first time offense for something like this is the answer. However, driving, like many things, is a privilege and it should 100% be lost when anybody does something stupid like this.