If you park in tall dry grass on the roadside, watch for what?

If you park in tall dry grass on the roadside, watch for what? Potential fires that could occur due to your exhaust system.  Dry grass has a good chance of burning when it comes in contact with a hot source so turn off your engine to avoid this kind of situation.

So, if you park in such a situation, your car will be surrounded by an easily inflammable material that is potentially touching it in many places. Therefore you should watch out that you don't start a fire, for example if the heat from exhaust system causes the grass to catch fire.

Theories.

After numerous observations, testing, etc., it is considered a theory, but is not absolute because new scientific can prove it wrong.