I am still working on my entry, luckily I have enough time thanks to the new "extra" format.
The fire can now finally be fought using the fire truck unit. It can extinguish up to three tiles at once, but is limited to roads and thus can only reach tiles adjacent to those. You will also need to watch out as they can be destroyed if their current location catches fire. It can only withstand the heat for so long, so you can push through burning roads or make your getaway, but be fast with it.
Fire is also affected by wind now and spreads accordingly. You can use this to your advantage, as fire will not move against the wind, but a sudden change in wind direction can catch you by surprise!