The Corvalis Effect
New rules we had to make because of the urban setting:
Damaging a driver of a vehicle: If a driver of a vehicle has taken damage from an attack or effect they must make a concentration check as per the normal spell concentration rules or lose control of the vehicle. The DM decides what happens based on the situation.
Saves before being thrown off on high places etc.: Named NPCs or PCs get a save of some kind before being forced into deadly situations or inescapable danger. (if a character is on the edge of a cliff and is pushed off by an effect. they get a dex save (DC = 10+ 2 for every full 5 feet they would have been over the cliff/etc.)