Are there both cars and backpacks in this picture?
No, there is a backpack but no cars.
    src        edge_attr  dst
0     0   to the left of   18
1     3  to the right of   15
2     3  to the right of    5
3     3   to the left of    7
4     3   to the left of    4
5     3  to the right of   10
6     4  to the right of    3
7     5   to the left of    3
8     5  to the right of   15
9     5   to the left of   14
10    6   to the left of   18
11    6   to the left of   11
12    7  to the right of    3
13    9  to the right of   11
14    9  to the right of   18
15   10   to the left of   14
16   10   to the left of    3
17   10  to the right of   15
18   11   to the left of    9
19   11  to the right of    6
20   11  to the right of   18
21   14  to the right of   10
22   14  to the right of    5
23   14  to the right of   15
24   15   to the left of   14
25   15   to the left of   10
26   15   to the left of    3
27   15   to the left of    5
28   18  to the right of    0
29   18   to the left of   11
30   18   to the left of    9
31   18  to the right of    6