(CNN Business) Tesla is selling its cars with the option of "full self-driving capability," a feature that's drawing criticism from experts on self-driving technology. Experts say Tesla's full self-driving feature is really a "partial" self-driving feature that handles minor driving tasks such as keeping pace with other cars on a highway and still requires diligent ＿＿（51）＿＿ oversight. To most autonomous vehicle experts, "full self-driving" means a car in which a person could safely fall asleep ＿＿（52）＿＿ the wheel and the steering wheel and pedals aren't even needed. They say the general public doesn't understand this, and misperceptions abound. A 2018 study found that 71% of drivers believed they could purchase a self-driving car today, despite no fully autonomous vehicles being available for sale. Experts warn that this lack of understanding could be deadly as humans may put too much ＿＿（53）＿＿ in systems like Tesla's, leading to crashes. Part of the problem, according to experts, is that governing bodies haven't ＿＿（54）＿＿ a definition for self-driving vehicles. Some experts tell CNN Business that the government needs to step in to prevent businesses from misleading and confusing ＿＿（55）＿＿ . One says, "Tesla's use of this term is totally irresponsible."