Are the cars on the right side of the image?
No, the cars are on the left of the image.
    src        edge_attr  dst
0     0   to the left of    9
1     1   to the left of    9
2     3   to the left of    9
3     5  to the right of   11
4     5               on    8
5     6   to the left of    9
6     7               on    8
7     9  to the right of    6
8     9  to the right of   12
9     9  to the right of    0
10    9  to the right of    1
11    9  to the right of    3
12   10               at    9
13   11   to the left of    5
14   11               on    9
15   12   to the left of    9