I asked chatgbt

i asked him to fix it and now it worked,

hook.Add("Tick", "RemoveCarsInWater", function()

for _, car in ipairs(ents.FindByClass("prop_vehicle_jeep")) do

if car:GetPos().z < 0 and car:WaterLevel() > 0 then

car:Remove()

end

end

end)

And chatgpt 4 is right in the corner AI is the new revolution