Which kind of vehicle is on the road?
The vehicle is a car.
    src        edge_attr  dst
0     0          wearing    6
1     0  to the right of   16
2     0         carrying    3
3     0  to the right of   15
4     0            above   13
5     0          wearing    9
6     1            below   18
7     1  to the right of    5
8     2            below    4
9     2  to the right of    5
10    2  to the right of   13
11    3  to the right of    7
12    4  to the right of   13
13    4  to the right of    5
14    5   to the left of    4
15    5   to the left of    2
16    5   to the left of    1
17    5   to the left of   18
18    6  to the right of   16
19    6  to the right of   15
20    7   to the left of    3
21   13            below    0
22   13   to the left of   14
23   13   to the left of    2
24   13   to the left of    4
25   14  to the right of   13
26   15   to the left of    6
27   15   to the left of    0
28   15  to the right of   17
29   16   to the left of    6
30   16   to the left of    0
31   17               in    8
32   17               on   16
33   17   to the left of   15
34   18  to the right of    5