I was coming home from work late last night. Was heading out of Seattle going south on I-5. I went by a CBR1000 that was going 127mph at 170mph on my ZX10. Dude caught up to me when I slowed down at the interchange but once we hit 405 I lost him like a ghost. Dude came off the same exit as me and said "You went by me when I was going 127mph and dissappeared". I told him I hit 172mph and he tripped. He said something like "Damn those Ninja's are fast". I powered up a wheelie for 40-50 feet after the light turned green at the end of the exit.