Re: If mass increases as an object w/ mass approaches C can it become a black h

If you were moving at a high velocity, you would not be able to 
distinguish it from being at rest. This is where the whole principle of 
relativity comes from. Therefore, to yourself, you would not appear any 
more massive, only to an observer. Therefore, you would not form a black 
hole.
I am not certain of this, as I am a little rusty on general relativity, 
but it is the best answer I can think of. I apologise for the lateness of 
my reply.
An interesting question would be whether a black hole could form from very 
fast acceleration (acceleration being undistinguishable from gravity. 
However, I believe that the answer to this is also no: Acceleration is 
equivalent to a gravitational field, but does not increase the attraction 
between two parts of the accelerating body.