Move iterators for containers, why not implemented?

C++98 containers defined two kinds of iterator, ::iterators and ::const_iterators. Generally, like this:

class Vector{
   iterator begin();
   const_iterator begin() const;
};

In C++11 this part of the design seems to be unchanged. The question is, for consistency and for practical purposes would it make sense to add ::move_iterators as well? or it an overkill.

I can imagine that an rvalue container maybe have their elements moved if possible.

class Vector{
   iterator begin() &;
   const_iterator begin() const&;
   move_iterator begin() &&;
};

If I understand correctly, it could be implemented like this in simple cases:

auto Vector::begin() &&{return std::make_move_iterator(this->begin());}