The American Flyers FIRC has a time limit before you can take a quiz and move on to the next section. I think it was 90 minutes. There where something like 8 sections and the course was like a min of 15 hours.

I didn't know that and thought I could do it in a day, but I was wrong. All said and done it's not that hard to read the section then just stay logged on whilst you do other stuff then take the quiz. I think I ended up taking 2 days to finish the course and then another day to drive up to the FSDO. Actually processing at the FSDO only took about half an hour. Most courses will even do that for you, but I don't really see it being worth the cost of that service.