Had my test drive. Things to say:
Quiet. Very quiet when at low speeds. I've never driven a electric only vehicle before so that took some getting used to. Road noise encroached a little at higher speeds but still able to have a normal conversation at high speeds - no much different to other competitors in this area.
Quick, the instant torque delivery was outstanding to experience. Very 'wafty' as there's no rises and fall in power delivery throughout acceleration - from 5mph up to 80mph. The grip was impressive, a few occasions of lost traction when accelerating hard from small speeds over roughish ground.
Steering I kept on sport the whole drive except for car park driving on comfort - the difference was very noticeable. Going from a feel-less VW Polo style to a heavier far more sportier style - not sure there's a great deal of feel going on through the wheel even in the sportier setting but it definitely helps. We tested the air suspension levels which didn't do a great deal to the drive but allows the car to adjust to rougher/smoother roads.
The whole technology aspect really got my juices going - being a geek myself - the always-on internet, google maps integration, over-the-air updates to software and fundamental drivechain changes.
In traffic the car really excelled - they recently added a Coasting option to the settings - On or Off. Off meaning you allow the car to full regen-brake when your foot comes off the throttle - even the brake lights will come on when regen is recovering above a certain amount (very heavy engine braking) - this saves brakes consumables and increases range. The other mode is On which mimics normal car driving which will coast down to a stop with similar levels of engine braking to a normal exec car (My current V12 is actually closer to the full-regen coast mode than the other). Anyway, point being it makes it extremely easy to drive in traffic with the full-regen coast as the car will effectively brake when you come off the accelerator. It won't quite come to a stop but will go down to "idling in first gear" speeds before the actual brake pedal is needed. I quickly found myself feathering the throttle if I wanted to coast normally, releasing it to slow a lot and accelerating in the normal way...very intuitive.
Very spacious inside - boot front and back - despite what I've heard, I thought it was pretty well screwed together - I heard no rattles or squeaks (and trust me, you would definitely hear them!). The interior is dominated by the touch screen and you do feel something is missing when compared to Euro cars of the same class/price - the seats are very wide and "flat" - the leather on them looks pretty cheap (not stretched enough? floppy? something about it makes it look cheap...) - probably my least favourite bit of the car but the rest is very acceptable. The door handles also look rather cheap (imho) - they pop out and illuminate (nice) but look like they're chrome coated plastic like you get on cheap toys?
Overall I really enjoyed the car. I am tempted but they are just that little bit expensive (£84k for my spec'd up one
) - if the seats and door handles didn't stand out as "cheap" I would be 100% interested, as it is now, probably sitting on the fence. The running costs are essentially £450 a year servicing + £10 for fuel (if you dont charge it at home - no need if around london if you dont mind stopping at superchargers for 20 mins now and again) + tyres - in other words, for a 4.5s 0-60 car, ridiculously cheap. The only incentive the government gives to individuals is a £5,000 grant but that's included in the list price - most of the gov plans seem to target company cars which is where the significant savings come into play (something I won't be able to take advantage of in the foreseeable future).
, fast (4.2 to 60 
), practical, packed with toys - my current car has less range than this - granted I can fill it up easier but Tesla are installing 'superchargers' in the UK that should get me anywhere I need within reason...
(... Something that I'm sure I won't be saying when I'm sat in Burger King for the 3rd time that day for half an hour each go.