Are there either cars or bags?
Yes, there is a bag.
     src        edge_attr  dst
0      0  to the right of    3
1      0  to the right of   26
2      0   to the left of   27
3      0   to the left of   25
4      0  to the right of   29
..   ...              ...  ...
250   34   to the left of   22
251   34   to the left of   21
252   34   to the left of   23
253   34  to the right of   30
254   34  to the right of   29

[255 rows x 3 columns]