Turn on your GPS, but don't turn off your mind

satellite 衛星
wedge 使卡住 , 門檔
incident 意外,插曲
route 引導 ... 到路線
keep your wits about you 隨機應變
keep your eyes on the road 注意路況
the devices are only as good as the software in them. GPS的好壞決定於它的軟體
simile 明喻
peeling 剝皮, 削下來