警方：南加的被害学生的BMW是2003年的二手车，花了$1万。

男的平时骑自行车，应不是富家子弟。

http://latime*****logs.latimes.com/lanow/2012/04/one-slain-usc-student-shot-multiple-times-in-head-police-say.html

Qu would often ride his bike to Wu's home, where the two would converse on the porch, the sources said. But on Wednesday, it was raining and Qu was in his BMW that friends said was a 2003 model he bought for $10,000. Police said a witness told them the two had been studying at the library earlier in the evening.