E92 M3 vs AUDI RS4 (影片)

http://www.automotorsport.se/tv/?m=11121
not sure which one is better or faster in this test but I SURE the upcoming "RS5" must be a threat,
(according to RS4`s performance)
~
如果RS4都可以緊咬M3不放，那RS5不就更恐怖了