OP found a disc that had been sprayed with Febreze.

Except I used to assume the same thing, but I failed every time I didn’t include the rider. Once I started including all the squares with the rider(s) as well, I started passing a lot more.

Right? After failing 90% of captchas I started selecting the person on the motorcycle as well. And wouldn’t you know it, I’m now passing most if the time.