Glenn should have floored the accelerator and kept a straight path when facing the walker swarm.
This is very gruesome and I don't want to upset anyone who has experience of a road accident.
But I feel I should share this in the event that we might face a zombie apocalypse 
So look away now.
If you hit someone at anything over 45mph they will bounce clean over your car and land in the road behind. You could probably do about 40mph but I'd want to be on the safe side if in a zombie apocalypse.
You will sustain damage to the radiator grille and obviously your car would be ruled out of Aaron's hobby of collecting registration plates, but the windscreen would remain clear of blood or shattering from the impact of zombie parts.
The police use injuries, whereabouts of damage to the car and eventual ending up of the victim to very accurately assess speed.
There was a lot of survival skills I picked up from reporting on inquests.
The main ones were never think you can beat the train on the level crossing and do not attempt to climb over hotel balconies. Especially when drunk.