local updateFrequency = 0.5 // In seconds
sgm_getVehicleListCache = {}
function sgm_getVehicleList(mdl)
    if !sgm_getVehicleListCache[mdl] or sgm_getVehicleListCache[mdl].rescanTime >= CurTime() then
        sgm_getVehicleListCache[mdl] = {rescanTime = CurTime()+updateFrequency, data}
        for k,v in pairs(ents.FindByClass("prop_vehicle_jeep*")) do
            if IsValid(v) then
                local tempmdl = v:GetModel()
                if tempmdl == mdl then
                    table.insert(sgm_getVehicleListCache[mdl].data, v)
                end
            end
        end
    end

    return sgm_getVehicleListCache[mdl].data
end

function handleCVPI_FH3(ent)
end

hook.Add("Think", "SGM_CachedVehicleThink", function()
    for k,ent in pairs(sgm_getVehicleList("models/sentry/cvpi_fh3.mdl")) do
        handleCVPI_FH3(ent)
    end
end)