You can usually check the manufacturer's website to see if your make and model are compatible. Mine is supposedly, that's why I bought it, yet it does poorly on E10. I have adjusted my driving style and every once and a while I use an additive.
I actually use more fuel now then I did with my economic driving style, but if I still drove like that my engine would eventually turn to shit.
That's interesting as we found the same with our car - a 20yo VW (bought used at 8yo). A few years after we bought it, I accidentally filled it up at an unfamiliar petrol station with the premium unleaded and was really angry with myself for wasting money. However, once we got on the open road, it seemed to fly, drive much more smoothly and (not scientifically proven) we had had a lot of regular engine 'niggles' and strange noises before and these went down to virtually nil.
We've been using the premium ever since - I'd rather pay an extra 15p per litre at the pumps and have a car that lasts longer than have a more sluggish driving experience and horrendous regular bills at the garage. Plus, we get more mpg with the premium stuff, so it doesn't work out as big a price differential as it seems (if at all).
Some councils are starting to trial lamp post charging points. I'm not sure how they've managed to get them past a risk assessment because if trailing cables from cars to lamp post etc ir how you pay for it or whatever, but they are considering and trying out solutions for people who wont be able to get their car close to their house.
But unless they have plugs all along the kerb every residential street, it's going to be a challenge.
They're planning on wireless charging, so when it's perfected/released, trailing wires won't be any kind of issue. Also, I gather that one of the functions of 'smart' motorways is eventually going to be to offer wireless charging as you drive along.
Presumably, other kinds of major roads will follow before long, so range anxiety will be pointless, as long as you have enough charge to get you across town and on to a big enough road - although batteries don't keep on charging indefinitely without wearing out.
They'll probably integrate it with ANPR (like how they already know when you enter a toll motorway) and other spy 'smart' technologies and send you a bill/take payment by DD at the end of the month.