This is cool, but will flop because as much as we'd like nice economical cars, we like acceleration and lots of space.
The landrover brigade will always get the next 4.6L eco smashing monster, then will never put anything bigger than a pair of (mud free) hunters in the boot and claim they need it tat big so little tarquin and his friends have plenty of space in the back.
But this is just everybody else on a smaller scale, we don't want the inconvienience of having the £29.99 B&Q BBQ delivered because we can fit it in to the car etc.
I don't run a car (I have a motorbike), I get shopping delivered and hire a car when I really need to (taking daughter to Uni etc.), quite frankly it's a pain in the arse, and if I could afford it I'd get a nice mazda 3 or 3 series BM, £200 a month (all in? insurance?) is OK but when you can pick up a car that will last 12 months for less than a grand, why bother?
This car will be bought by people as a second car for work commutes (instead of sharing or using the bus/train), this won't help the environment in any way, and will probably make it worse, it will only become a good idea when it becomes the ONLY choice.