On which side are the cars?
The cars are on the left of the image.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of   10
2     1  to the right of    9
3     1  to the right of   10
4     1   to the left of    8
5     1  to the right of    3
6     1  to the right of    5
7     2  to the right of    4
8     3   to the left of   12
9     3   to the left of    1
10    3   to the left of   13
11    3   to the left of    9
12    4   to the left of   13
13    4   to the left of    2
14    5   to the left of   12
15    5   to the left of    1
16    5   to the left of   13
17    5   to the left of    8
18    6               on    8
19    6  to the right of   10
20    7               in    9
21    7   to the left of    0
22    7  to the right of   10
23    8               of   13
24    8  to the right of   12
25    8  to the right of    5
26    8  to the right of    1
27    8  to the right of    9
28    8  to the right of   10
29    9  to the right of   11
30    9               on    1
31    9   to the left of    1
32    9   to the left of    8
33    9  to the right of    3
34   10   to the left of   12
35   10               on    5
36   10   to the left of    6
37   10   to the left of    7
38   10   to the left of    0
39   10   to the left of   13
40   10   to the left of    1
41   10   to the left of    8
42   11   to the left of    9
43   11               on    3
44   11   to the left of   13
45   12  to the right of    3
46   12  to the right of    5
47   12  to the right of   10
48   12      in front of   13
49   12   to the left of    8
50   13  to the right of   11
51   13  to the right of   10
52   13           behind   12
53   13  to the right of    3
54   13  to the right of    4
55   13  to the right of    5