I had the autofocus Fuji Instax Wide camera -I think was 200 - from an auction deal. It was a nice camera, but after a few years use the processor got confused and would not drive the film all the way out after expsoure. This drove me to the 210, since finding another 200 was just nigh of impossible it seemed at the time.
I mostly use it indoors at night as a party camera. People get a real kick out of being handed a print these days, and se it develop in front of theitr eyes.
I think you're referring to the now discontinued fujifilm 500AF as its the only auto focus instax camera that I know.