I voted that I like it.
My son recently completed an online Driver's Ed. course. It was very structured in how he studied and answered the question, not allowing him to rush through it. As far as a way to learn the rules etc. I think it has been a very effective teaching tool. Probably better than what many people get from classroom instruction. To get a license in Georgia, there is also a requirement for a parent to fill out several forms and log sheets documenting that the student driver spent at least 40 hours driving, a certain portion of it at night and that various skills are mastered. This is where the system is subject to break down as I am sure many parents fill out the forms without really teaching the kids to drive properly. I'm not confident that many of the in car trainers do an adequate job either.

FWIW, I'm about to take my son to take his written and in car driving tests. If he passes, another teenager will be loosed on the streets.