newGroup = display.newGroup()

car1 = car.new( {x = 160, y = screenTop-20} )
newGroup:insert(car1)

sensor1 = sensor.new({x = 160 - 16, y = screenTop + 10})
newGroup:insert(sensor1)

local OriginalnewGroupX = newGroup.x
local OriginalnewGroupY = newGroup.y
local moveOrderTime, moveOrderX, moveOrderY

local movegroup
local function resetGroup()
    newGroup.x = OriginalnewGroupX
    newGroup.y = OriginalnewGroupY
    moveGroup({time = moveOrderTime, x = moveOrderX, y = moveOrderY})
end

function moveGroup(params)
    moveOrderTime = params.time
    moveOrderX = params.x
    moveOrderY = params.Y
    tnt:newTransition(newGroup, {time = moveOrderTime, x = moveOrderX, y = moveOrderY, onComplete = resetGroup})
end

moveGroup({time = 7000, x = newGroup.x, y = screenBottom + 60})