???mt????4.0????????????

????????????mt????4.0????????????? ???mt????????????

??????4.0?????м???????????????????ˉ??

1???????????????????????????????к??????????????????????????????????????????????

2??????6???????1?????????100%???????м???????????????????????????????????????18%??6??????????1?????????????

????????????????????????!???????15??????5???????

?????????????40407???mt???http://austindefensivedrivingonline.com/mt/