Best thing to do, in this case, is to firstly remove it from the frame. Degrease it thoroughly, then spend around 10 minutes on the wire wheel, removing all traces of rust. Give it a good coat of Red Oxide, (top coat optional), take deep breath ... then see if you can hit the opposite bank of the River Cam with it!
Just joking! It's neither use nor ornament! Just Suzuki's way of extracting more of your 'Hard Earned'!