You never know - might not be as bad as you think. I once got a job because the guy at the interview wanted to see what kind of muppet would forget to sign the application form.
Maybe the buyer you were pitching to has an interest in bikes?
If it makes you feel any better I had an interview with a CEO (for an article, not a job interview). Figured I’d bike over as it’d be quicker than public transport. It took longer than expected to find the address and I was a few minutes late. They were waiting for me in the lobby so I had no time to change into my smart clothes and did the whole interview in my power ranger gear. Not too professional, especially as the last time they’d seen me I was in my suit.
You should explain that the latest EU legislation requires any demonstrator of office machinery to be equipped with safety boots to avoid any injury from falling paperclips;)