The electric scooter is really not for long traveling, but since I did not find a forum about mobility in general, this seems to come most close to the theme.
I just make a long time test of an E-Max S electric scooter.
http://car.pege.org/type/e-max-s.htm
In EU limited to 45km/h, holds speed also on some % uphill
60km range
It's good to replace the car at short distances with not to much to transport.
The scooter is in Germany and Austria for only 1995.-EUR, so it's cheap enough for the not environment concerned to purchase only by money advantage.
I replace with the electric scooter about 500km per month.
Because it's short distances and city traffic, using the car would cost
more time in traffic jams and searching parking lots
10 EUR parking fees
40 EUR for 40 litre Diesel
50 EUR value reduction of car by more km
10 EUR service and tires
110 EUR total per month
The scooter needs
4 EUR electric power
20 EUR value reduction of scooter
5 EUR for insurance
10 EUR for service tires and new batteries
39 EUR total per month