Journalists who report on road racing seem to be obsessed with 200mph. if you read above, Guy describes the crash as around 130mph! 

The whole book is based on what Guy was thinking at the time, and to quote "It's important to point out that I've written this book as I've gone along, so you're reading what I thought at the time . Even if I end up contradicting myself later I haven't gone back and changed it, so you can see what I was thinking, and hopefully why, then follow the process of me changing my mind."
 
So Guy could still be racing at the NW and TT. I hope not though. Would like him to get out of it all while he's still walkin' and talkin'.