The North American Smart was larger than that, wasn't classified as a motorcycle and as of last year has been entirely discontinued:

https://www.caranddriver.com/news/a27310639/smart-fortwo-dis...

The main use of these cars was the Car2Go service, which was owned by Mercedes themselves, and that service has also shut down in North America.

They were cute cars, decent for a short trip certainly, but we never saw an all-electric model