I usually find you to be quite amusing and charming and I know that you meant no disrespect but that is how I feel after your escapade in the grocery market - disrespected.
For far too many people motorised scooters and wheelchairs are the ONLY way that we can get about. When people fool around in them in public places it leaves a negative impression that lingers. It makes it appear that the mobility devices are not truly necessary and indeed, it appears that they are only a nuisance.
I ask that you take my message to heart as there are real people in those "fun" motorised scooters/chairs- real people with real pain.