Ford has introduced a rear-bumper parking assistance device in its Windstar minivan that uses sonar to help you back into tight spaces. Its beeps become increasingly ear-Jarring if you come too close.

• 福特公司在它的Windstar小型货车上安装了一种后保险杠停车辅助系统，可利用声纳来帮助你倒车进入狭小的停车场地。