Yep, when I was in High School and working at the local Yamaha Shop (late 70's/early80's), we received a new fangled, very large blue rolling electronic cart. I remember my Service Manager being very intrigued as he was getting familiar with it.
It was our new exhaust gas analyzer that took forever to warm up and get ready to use....had probes for the exhaust pipes, etc.
I remember watching him test and tweak several different problem children bikes on it when they wouldnt quite run right due to the new uber lean factory settings for the US market....several 650's included.