Ticket911, as well as other companies in this market, are present because there is money to do, because government is finding more and more ways to pay for its incapacity to manage our taxes. I believe you can defend your very own person in court if a mistake was done by the law officer arresting you. If you want to go fast or want to see the capacity of your new car, heck you can go to a track nearby, pay a small amount of money and do it safely, with an instructor beside you. If you are not brilliant enough to do it, you might deserve the ticket.
IMO,it should not be possible to contest a driving under the influence of alcohol (or other drugs) ticket. No mater how much you pay. But where there's money, there will be people to take it!