Well there is a reason this was done in sunny Morocco rather than rainy Britain.

However even in shade you'll still generate electricity, just not as much.

I see this is inline with this being more of a range extender the same as good regen for those that can't get full sun all the time. I get between a quarter and fifth back from regen, if I can get that again from solar then that's huge.

Personally I won't touch panels in the UK at present because the yield from the number of panels you can actually fit on an average UK roof is just pathetic over a full year. We need greater efficiency to make it work, which would also benefit cars like this.

The idea of a separate house battery is a good one however anything of decent size for whole home when you have cooker, heat pump for heating and water, the cost of inverters, plus EV charging being a few 10s of kwhs (we do between 300 and 400 kWh between three cars every month) is just a non starter in the UK for the average home. They would need too large a battery and need a huge amount of solar to charge it, we just don't have the room or return on investment.

It makes more sense to use the very large battery you already own on the car and do it that way. Charge at work using their solar and return it back home.