https://www.renault.co.uk/vehicles/new-vehicles/twizy/dimens...
It is more like a bike with 4 wheels, or if you prefer it is as much a car as the Isetta was a car:
https://en.wikipedia.org/wiki/Isetta
While it does surely fulfill the needs of someone living in a small EU city (and that needs not to commute for work) it is not IMHO really comparable to a car.
BTW, I guess it depends on the country, here in Italy you surely cannot get on highways with it (as much as you cannot get on them with an Isetta or with an original FIAT 500), but the issue - at least in theory - is that a number of "main" motorways have the same highway limits AND that a number of city by-passes are categorized as "urban highway": Italian but understandable via Google translate:
https://twizyblog.wordpress.com/2012/07/09/limiti-di-circola...