Need help for making Cider Car

[nexusowner]

The titles says everything. Hello Facepunch. I try to make a car for my Cider RP.
But im not sure about this code; And yes i took this code from another old post. And i would like to thank shane_104.
But here is the code

[lua]--[[
Name: "sh_jeep.lua".
Product: "Cider (Roleplay)".
--]]

-- Define the item table.
local ITEM = {};

-- Set some information about the item.
ITEM.name = "Jeep";
ITEM.size = 5;
ITEM.cost = 5000;
ITEM.model = "models/buggy.mdl";
ITEM.batch = 1;
ITEM.store = true;
ITEM.plural = "Jeeps";
ITEM.uniqueID = "jeep";
ITEM.description = "A jeep to get about with.";
ITEM.vehiclescript = "scripts/vehicles/jeep_test.txt"

-- Called when a player uses the item.
function ITEM:onUse(player, item)
local car = ents.Create("prop_vehicle_jeep_old")
local trace = { }
trace.start = ply:EyePos()
trace.endpos = trace.start + ply:GetAimVector() * 85
trace.filter = ply
local tr = util.TraceLine(trace)
car:SetModel(ITEM.model)
car:SetKeyValue("vehiclescript",ITEM.vehiclescript)
car:SetPos(player:GetEyeTrace())
car:Spawn()
item:Remove()
Msg("onUse")
return false
end;

function ITEM:onPickup() end;

function ITEM:canManufacture() end;

cider.item.register(ITEM);[/lua]

And im not even sure where i should place this in my cider folder.
- Thanks In advance! :-)