I guess when I said scooters I meant the larger ones with the slightly more serious riders. I didn't mean kids on 30cc moped type things. I see people commuting around on the larger ones, sometimes even wearing gear, sometimes on the highway.
Actually, when I do see someone doing something stupid on two wheels lately, it's usually been scooters. One time driving my car on the highway, second lane from the right, scooter rider merges onto the highway and proceeds to cruise specifically in my blind spot for 20 minutes. If I didn't remember seeing her merge on and hadn't actually looked for her (i.e. driven like most everyone else does in MA) she would've gotten cut off or worse when my exit came around. Jacket, half-lid and goggles, maybe even a scarf. Maybe she thought getting some kind of look right means she's immune from having to use common sense.