Other innovations of the late fourth millennium include the wheel, probably developed first as a more efficient way of making pottery and then transferred to transport.
It took ten minutes for a beach patrol crew, traversing the steep dunes in a four-wheel-drive pickup, to transport Endris to an ambulance.
海滩巡逻员花了十分钟时间用四轮车穿过陡峭的沙丘，将Endris送到救护车上。
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A device that stops drivers from falling asleep at the wheel is about to undergo testing at Department of Transport laboratories and could go on sale within 12 months.