china is enjoying rapid economic gowth,the evidence of which

china is enjoying rapid economic gowth,the evidence of which can be seen in all major cities whose streets are teeming with thousands of vehicles of all kinds.traffic problems invariably ensue
can be seen 这是什么表达方式 ,还有最后一个单词ensue是个动词啊!
the evidence of which 可以换成 whose evidence吗？
同上 第二行的 whose streets 可以换成 the streets of which？