Do you see both trucks and cars there?
Yes, there are both a truck and a car.
    src        edge_attr  dst
0     0               on   13
1     0   to the left of   19
2     1   to the left of   12
3     1               on   23
4     2  to the right of    9
..  ...              ...  ...
59   22   to the left of   14
60   22   to the left of   20
61   22          wearing   21
62   22   to the left of   16
63   23   to the left of   12

[64 rows x 3 columns]