Can Somebody help me? Please anyone, Pleeeaaassseee D;

Can somebody help me? I'm trying to figure out where I can check to see if there is a robloxian in my cars! I don't want my cars being respawned while someone sits in them, but I still want them to respawn if someone isn't in them! Help! :(

local RespawnCarsBlock=game.Workspace.RespawnCarsBlock
local Car=game.ServerStorage.Car

function RespawnCars()
print ("R3sp@wN c@rz n0w pl0x.")
for _,object in pairs (game.Workspace:GetChildren())do

if object.Name=="Car"
then 
print ("IT'S A CAR! KILL THE INFERIOR BEING!")
object:Destroy()
end
end
for _, object in pairs (game.ServerStorage:GetChildren())do

local CarCopy= object:Clone()
CarCopy.Parent=game.Workspace
CarCopy:MakeJoints()
end





end



RespawnCarsBlock.Touched:connect(RespawnCars)