Bunsen Burgers on Walzem Rd. San Antonio,what happend?

For local San Antonio folks, do any of you know what happend to Bunsen Burgers on Walzem Rd.?
 
I was down that way yesterday,and I saw it was gone.That was a shame,as they had good burgers. Do you know if they moved? There is on Yelp a review dated Sept.4,2009, so that's quite recent. So whatever happend to the place happend in September.
 
Their website is still up, and it lists the Walzem Road address,just curious.

I was in San Antonio years ago and there was a place called Rooti's that we absolutely loved.  I wonder if it is still there.  I seem to remember it was near the airport.  Great Burgers.

rooti's is gone. I'm not sure what's in that building now.
However, I amybe mistaken.