For those of you wanting to know if you can play fast, short answer is Yes!!!! Your nervouse system already knows how to play fast...it's just a matter of training it by doing repetitive exercises slowly. The speed will come in time without you knowing it untill one day you realize...WOW! I'm actually playing fast or WOW! I can play these difficult chord changes without even thinking about it. Or Wow! I can play these difficult rythhms effortlessly. Etc.
It's just a matter of training your nervouse system to react.
I started learning guitar because of Randy Rhoads..but Yngwie J. Malmsteen is my biggest influence.