What color is the car in the bottom part of the picture?
The car is silver.
    src        edge_attr  dst
0     2   to the left of   12
1     4   to the left of   11
2     4   to the left of    9
3     5   to the left of   12
4     6   to the left of    9
5     9  to the right of    6
6     9  to the right of    4
7    11  to the right of    4
8    12  to the right of    2
9    12  to the right of    5
10   12               on    7