There's also the Renault Twizy that is readily available and significantly cheaper (starting at 7000 Euro). Actually even the regular electric car by Seat (Mii) is much cheaper than the Electrameccanica.
According to Wikipedia[0], a Smart is actually shorter and it can also be electric.
This actually has quite a few shortcomings compared to a Smart:
* Cannot carry a passenger
* Requires a motorcycle license, which many people might not have
* Technically a motorcycle, so safety standards may not be up to par
[0] https://en.wikipedia.org/wiki/Smart_Fortwo#Third_generation_...