James, I've just had a quick look, and your site looks very helpful & welcoming to read for a novice. I think maybe you could usefully add links to detailed pages elswhere, as there are many things that need to be explained in more detail.
Such as:
Main page :
"Can people unplug your cable?" vehicle-specific details (type 1 unlockability, env200 mentioned above) could usefully go into a later section. Also in there you would explain that the Rapids provide the cable in question, but Type 1&2 usually you bring your own - though I'm told there are also some (v rare) type-1 tethered chargers in existence! This would also tie into a section about whether a home charger should be tethered or untethered (pros & cons both ways), and details about whether any EVs you buy come with a portable Type 2 cable as standard. Am not myself aware of any that do, as they aren't peanuts to buy. Cost of these can be mentioned, links to trustworthy suppliers as well?
"How far can an electric vehicle go?"
Needs a detailed section, describing effects of winter, wet weather, choice of tyre, effect of fitting winter tyres, driving style, as well as the car's own efficiency, e.g. 30 kWh Ioniq going similar distance to 40 kWh Leaf. Then someone will wonder about towing, or roof-rack, and effects of - a whole new topic in itself. Tesla Model 3 has an approved roofrack you can buy & fit.
"How much does it cost to charge an electric vehicle?"
Needs detailed linked section, which would mention that some Teslas come with free lifetime charging, along with tables/info about the other various suppliers around.
"Do the batteries in an EV last long?"
needs detailed linked section. Recent append had a Mk1 leaf, 70K miles done and 50% degradation! We don't know the history of that car, but it may be the worst out there! Otoh Ampera manages zero detectable degradation over 200k miles. Teslas & otehr Nissans have done huge mileages. Maybe mention some cars upgradeable (i3) but this isn't commonly or easily done.
Understanding EVs page:
"Range Extender"
"REX vehicles have similar size batteries to full EVs." : Only correct for i3. Ampera has 10.4 kWh useable.
"Example BMW i3." Please add Ampera & Chevrolet Volt after BMW i3. Ok it's second hand only, but an impressive car nonetheless.
It's worth saying that the experience of driving a REX is essentially that of driving a full EV, with the huge torque and silence available whenever there's electricity in the battery. REX battery is usually greater than that of plugin hybrids
The experience of driving a Hybrid (plug-in or not) is that of driving a petrol/diesel car. Max torque only available by running the petrol engine. Some will start the engine as a matter of routine, even if you don't want it to (Ioniq plug-in). Driver aware of gear changes usually, though not in Prius I believe.
Worth mentioning somewhere that non-plugin-hybrids are really just an ordinary car to drive, just slightly more efficient than a conventional petrol/diesel, and that readers should not be taken in by claims of "self-charging cars".
"Models Available" linked page. Looks good, but what about the 2nd hand market? Ampera? MB 250e? Leaf Mk1? links to owner's experiences of these vehicles? By all means point them to some of our threads here, why not? We're public!
Maybe add a section somewhere (under "Cost Savings" ?) about buying 2nd hand, and what to look out for? Leaf Spy & other tools to help check a 2nd hand purchase? Likely to be very vehicle specific.
Overall I think it looks to be an excellent site, my concerns are that the devil is in the detail! Anyone considering buying an EV first-time really does need to talk to /read about other owners to make sure they're not having the wool pulled over their eyes. Maybe link to youtube reviews of the various cars? It can be hard to find that Ioniq .vs/ Leaf rang&speed test by Bjorn for e.g., which could be extremely useful to someone torn between which of the 2 to go for.
Section on health benefits? E.g. even if can't afford a BEV, driving a Phev means you can choose to use electricity when passing through built-up areas, and burn petrol out in the open, so reducing the pollution in said areas.
Problem is, how to avoid drowning the reader in this stuff! pretty-much every topic you raise could have a lot of backup & related info. But thanks for your efforts so far, looks v impressive!