However , some ANM trolleybuses are stored at the Via Ferraris and Carlo III bus depots , which they use their diesel engines to enter and exit .
The only trolleybus depot available to the ANM network is the Stella Polare depot .
Some ANM trolleybuses are stored at the Via Ferraris and Carlo III bus depots , which they use their diesel engines to enter and exit .
The only trolleybus depot available to the ANM network is the Stella Polare depot .