Do the car and the manhole cover have a different colors?
No, both the car and the manhole cover are blue.
    src        edge_attr  dst
0     0  to the right of    1
1     0  to the right of   14
2     0  to the right of   13
3     0  to the right of    8
4     1           behind    9
5     1  to the right of   12
6     1          next to    9
7     1   to the left of    0
8     1             near   12
9     2  to the right of   12
10    2  to the right of    3
11    3  to the right of    9
12    3   to the left of    2
13    3  to the right of   12
14    5   to the left of   10
15    6             near    7
16    7          next to    6
17    8           inside    1
18    8   to the left of   14
19    8  to the right of   12
20    8   to the left of    0
21    9      in front of    1
22    9             near    1
23    9   to the left of    3
24   10  to the right of    5
25   11  to the right of   12
26   12   to the left of    3
27   12   to the left of   11
28   12             near    1
29   12   to the left of    8
30   12   to the left of    2
31   12   to the left of    1
32   12          next to    1
33   13   to the left of    0
34   14      in front of   13
35   14   to the left of    0
36   14  to the right of    8