When we vote to close, we currently have a variety of options, however currently we have to select the 'other' and add a text description for questions that are not about bicycles/cycling.
I propose we have a new custom close option added under 'A community-specific reason' as follows:
"This question is not related to cycling or cycling equipment".
Had this option been available I would have been able to use it many times already for motorbike related questions