Electric transportation is just so, so good.
Sure, the Unu is under-powered by comparison with its gas-guzzling ancestors, but this is regulatory not technical (Unu's are soft-limited to 45km/h here in Europe, alas) but electric is really the wave of the future. I get home and back again on my Unu with just as much comfort as I did with the Vespa - only I'm completely silent, and not woofing fumes at every stop. Plus, its incredibly cheap to charge the batteries.
I think, once a few more people experience life on electric wheels, there is going to be a turning point where the archaic gas-guzzlers rapidly get replaced with green alternatives. We already see this here in middle-Europe (Vienna) - electric vehicles are becoming more and more common, and in a very eco-/green- centric market such as Vienna, not a week goes by without seeing more and more of these vehicles on the road.
If anyone is on the fence about it, consider switching. It may not quite have the revs and torque of the gas-guzzlers, but the benefits - clean and efficient travel - are worth the effort by far.
I'll ride my Unu another year or two, and then upgrade to something with a bit more speed, maybe a Čezeta if I can get one in a year or two. Electric is just so much fun, even at the lower-grade Unu level .. and even though it was cheaper to go from gas-Vespa to Unu, I still get a bump on the lifestyle credentials. My friends and family are envious of the electric aspect, even though the thing is nowhere near as performant as the old Vespa GTS was. (Yes, I know Vespa have an electric variant now too - I'm gonna upgrade to Čezeta though .. nicer style!)