The Twizy is certainly a heart over head purchase. From a logical perspective it doesn't add up, relatively expensive for what it is, not too good in the cold, limited storage space, limited range the list goes on.
But for me and many other on this forum, we just love the Twizy. It's got bags of charm and character (despite the pig ignorant people who will comment on it when they can), is completely useable if you make fairly short distance trip on your own with just a bag or two and is very economical. It's also epic to drive, so nippy and darts around corners like a Lotus!
If you need any more info or want to make the trip up here I'd be happy to show you my Twizy