Electrically assisted mountain bikes are helping police in Arizona fight crime and pollution on the streets of Tucson. Stuart McDill reports.
01:02
00:47
00:28
02:19
00:52
00:33
01:15
00:33
01:04
02:26
01:01
01:05
00:25
00:52
01:28
02:22
02:51
03:03
01:59
00:47
02:22
00:47
01:22
01:08
01:01
02:59
01:49
00:49
02:23
00:50
02:26
01:53
00:45
01:09
00:55
01:27
00:49
00:45
01:03
01:34
00:47
00:28
00:52
00:33
01:05
00:25
01:59
01:34
00:33
00:40
00:28
00:26
01:23
00:43
01:24
01:21
00:30
00:42
01:15
01:22
01:41
01:04
02:26
03:03
02:30
01:49
02:14
01:27
02:03
01:21
07:58
00:29
01:08
01:21
01:15
02:33
01:37
02:39
02:49
00:54
01:02
01:28
01:57
01:03
02:00
03:34
01:30
00:51
02:02
00:51
02:07
02:05
01:36
01:23
02:26
01:11
00:28
01:38
01:00
01:23