This bus ad was probably Reebok's idea. Canadian grappler Valerie Letourneau will challenge UFC strawweight champion Joanna Jedrzejczyk in the co-main event of UFC 193. Letourneau carries a four fight win streak into the title fight while Jedrzejczyk has morphed into a 115 pound shit talking and striking machine.
To promote the historic UFC 193 the UFC has gone the extra mile. In order to reach that extra mile the UFC had to travel via bus. The UFC marketing department is really focusing in on the "creepy guy with an expired bus pass" demographic for UFC 193.
Of course an user with the handle dudebro5000 would be the one to find this on Reddit