I haven't ever had a bike capable of more than 130-ish, so the fastest I've seen is:
147 on KeefyB's 999
145 on Sparkin's 888
140 on Fordie's 996
All on relatively short straight bits of the Bxxx private test track. Thanks guys, I was trying not to thrash 'em.
Fastest I've ever been was 170-ish in an Aston Martin DBS V8 Vantage
What felt like the fastest was navigating on the Welsh International Rally... flat out downhill on a straight bit of forest track. The car was only geared for 110-120 flat out, what made it feel ultra quick was the fact that the car was waltzing from side to side on a gravel surface and there was a sheer 200 foot drop just 2 feet to my left