i think the whole accumulated vs terminal argument is something he's MADE UP

he's using words completely out of contect that have no relevance whatsoever

top speed is top speed, end of.

if the guy seriously thinks he was doing 150mph then he needs his head examining

what you need to do is take off the 10% bullshit factor and take off the 10% (minimum) crappy speedo factor...

what youi're then left with is 120mph...

thats probably the REAL speed he was travelling

ps if i went by clock speeds, i could say my saff does 160mph