Anyway, if you want to hear a guitar being played about mid-40s per second and NOT in the typical scale/arp style check this out from our old buddy Bofatron -- the greatest spoof shredder of all time:
http://www.station185.com/kronoson/kronosonic/Demos_Sounds/Hell%20Ride%20Lick%2032nd%20notes%20at%20240%20bpm%20Bofatron%20Sofasaurus.mp3
And this was medium speed for Bofa. Ultimately, he worked his way up to speeds of about 70 notes per second, got bored with it all, and ran off to South America ;) If you dig the avant rock sound of Vernon Reid and his Dolphy-inspired shards of chaos solos then you might appreciate Bofatron.
http://www.station185.com/kronoson/kronosonic/site/bofatron2.htm
http://kronosonic.com