Which vehicle is not driving?
The vehicle is a taxi.
    src        edge_attr  dst
0     0            above    2
1     1          next to    9
2     1   to the left of    2
3     1   to the left of    5
4     1   to the left of    6
5     1             near    2
6     1   to the left of    8
7     2             near    1
8     2   to the left of    7
9     2  to the right of    1
10    3          next to    9
11    3             near    9
12    3  to the right of   10
13    3   to the left of    7
14    5  to the right of    1
15    6               in    5
16    6  to the right of    1
17    7  to the right of    3
18    7  to the right of    2
19    8  to the right of    1
20    9             near    1
21    9               on    9
22    9             near    3
23    9             near   11
24   10   to the left of    3
25   11          next to    9
26   11             near    9