Right. I could however imagine that someone wrote an 'automatic phpBBv2 signup bot', which leaves only the captcha to a HUMAAN (possibly inside some GUI). Wouldn't it be worth a try to alter the signup form in a way that could break such a bot? (e.g. by adding a simple math question alongside the ca...
Keep in mind that, if I'm not mistaken, the US uses automatic for the exam, which is significantly easier to use than manual gearbox common in the EU. From my experience, most places use whatever vehicle the person being tested can get their hands on, which can be either automatic or manual. I coul...