Maybe not.
I tried the following-
c = CoordSysRect('C')
v = Vector('C1', c, 1)
c2 = CoordSysRect('Ctwo', v, c)

Error-

Traceback (most recent call last):
  File "D:/gsoc/vectortest.py", line 7, in <module>
    c2 = CoordSysRect('C2', v, c)
  File "C:\Python27\lib\site-packages\sympy\vector\vector.py", line 364, in __init__
    super(CoordSysRect, self).__init__(*args, **kwargs)
  File "C:\Python27\lib\site-packages\sympy\vector\vector.py", line 129, in __init__
    self.dim = int(dim)
TypeError: int() argument must be a string or a number, not 'CoordSysRect'