>>> from autonoms import Autonom

--ini-enunciat
>>> b1 = Autonom('AS34', 18.0)
>>> b1.id, b1.vel
('AS34', 18.0)
>>> str(b1)
'Vehicle AS34'
>>> b1.durada(69.9)
datetime.timedelta(seconds=13980)
>>> b1.durada(245.2)
datetime.timedelta(seconds=49040)

--fi-enunciat
>>> b2 = Autonom('RM78', 4.5)
>>> str(b2)
'Vehicle RM78'
>>> b2.id, b2.vel
('RM78', 4.5)
>>> b2.durada(878.5)
datetime.timedelta(days=8, seconds=11600)
>>> b3 = Autonom('RM45', 20)
>>> b3.id, b3.vel
('RM45', 20)
>>> str(b3)
'Vehicle RM45'
>>> b3.durada(100)
datetime.timedelta(seconds=18000)