OK, unfortunately I am not going to give a lot to go on here.
In the last two weeks I have seen two different strange motorcycle-type vehicles on my usual drive to and from work (I live west of Boston and work in Cambridge).
I think I have seen each vehicle twice. In all cases they were driving directly towards me so I only got a good look at the front, and even then only for a few seconds.
Vehicle 1: Looks to be the size and shape of a standard two-wheeled motorcycle but has a cab-like dealy over the rider. In other words the front, top, and back(?) are covered but the sides are open.
Vehicle 2: Looks to be the size and shape of a standard motorcycle but as far as I can tell has two wheels in the front, very close together, and one(?) in the back.
From the brief glimpses I got they look like newer models, they aren’t some vintage contraptions. It is possible Vehicle 2 is a custom job but I don’t think so. Vehicle 1 seems like it is supposed to look the way it does.