When I rode up the ramp at work, a bystander thought that a go-kart was screaming up the ramp!
"Is that a motorcycle or bicycle" he asked.
"I thought a go-kart was coming up the ramp". he said.
"Excellent observation. My engine came out of a Tanaka Powerkart. Most people would've guessed it was a weedwhacker engine".
It turned out that my new friend used to race twin and three-engine Maico go-karts years ago.