I did say: "Takes out eyesight and hearing prior to frying any kind of intellect.
Head on fire means jellied eyeballs, crisped ears, collapsed nostrils, so there is a shortage of senses to zero in on one of the uncomtaminated as a target. Target selection requires some decision making however minor . . . . but there's no effective sight, smell, or hearing.
Are they going to be able to "fix" their quarry via engine vibration through the asphalt alone?
And that is based on "Shaun of the Dead
"-type zombies . . .
. . . which could be easily misled by imitating their shamble to change one's status from that of "target" to that of "fellow stagger-er"?