Figure (1) (2) the wenzhou city motor vehicle driver training industry association Zhang Jiaolian demonstration "Dutch drive door". Figure 3 Zhang Jiaolian demonstration "law of the secondary drive door" : the doors opened the first 15 to 20 cm aperture, observation confirmed safe to open the door. Zhejiang online on February 17, open a door, result and storage battery car collision, also the full pay 10000 yuan, citizens recently Mr Zhang of the traffic accident, the cause is a no...