There are multiple. Google it. Just so you know, they are not allowed on campus. They will take you from downtown to the strip and that’s about all. They can travel Bryant Dr but not to the stadium. Most streets on campus are usually closed 3 hrs or so before kickoff. Be ready to fork over 6-10 dollars each. There are also several pedicabs. Don’t know the rates but probably comparable. If you park at or near the federal courthouse parking deck you can ride the shuttles. I think they are free and run every 15-20 minutes. They are allowed to travel on campus and will deliver you to the stadium.
Sorry for length.