If someone or some people have the get up and go to make it work then why not ! Im sure any stadium owner is open to offers that could generate themselves income these days and as we know the sport is still very popular in that part of the country
Heres another thaught for you all, Most race courses (horses) are quite large and not allways in built up areas, most have huge infields so why not put speedway tracks in the middle?
plenty of parking and facilities are there and im sure most of them would be thankfull for extra income