when u mean: they are good and useful,

that's because we don't have our own.
if we do, they are not good and useful any more.

however, i doubt a bit of the data:
0-50m/h: 17sec?
max speed: ~85m/h?

所有跟帖： 

• 回复：when u mean: they are good and useful, -诺爸- ♂ (194 bytes) () 01/23/2009 postreply 22:49:27