If you’ve been following my Twitter feed lately, you would have seen this.

If not, here it is again, the picture speaks for itself…

Hit the image up for more detailed L4D stats.

1. A tank set on fire will always die in 30 seconds.
   
2. Tank on fire speed comparison.
   

In summary: any tank set on fire will die in 30 seconds, and in campaign mode, any tank on fire will be significantly faster than a non-flamed tank, while in versus mode the tank is slower when on fire.

Now the only question becomes what the tank is like in Survival mode…