How does fire on sidewalk spaces affect vehicles (outside of the building)

Question

When fire spreads to spaces outside of the building, how does this affect vehicle movements and usage?

• Do vehicles extinguish fire as they drive over it?
• Are vehicles unable to drive through fires (until they are extinguished). Pretty tough mechanism if so.
• Do vehicles simply ignore the fire but firefighters on foot do not?

Answer 1

Fires spread outdoors and affect firemen/victims accordingly, but are removed at the end of the Advance Fire phase, so they shouldn't have any impact on vehicle movement.