What is this vehicle called?
This is a wagon.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of   18
2     0  to the right of    2
3     0             near    1
4     0  to the right of   12
..  ...              ...  ...
73   18   to the left of    2
74   18   to the left of    6
75   18   to the left of    0
76   18   to the left of   17
77   18   to the left of   11

[78 rows x 3 columns]