The scooter is the latest gadget from award-winning inventor Dean Kamen,who has also developed the first insulin pump,a briefcase-sized dialysis machine,and a wheelchair that can climb stairs.

• 这种踏板车是获奖发明人迪恩·卡门的最新制作，他曾发明过第一个便携式胰岛素泵、公文包大小的透析机和能爬楼梯的轮椅。