Pretty cool trailer

Not VW, would look good next to a bay looks like a parabelloid funnel concentrator

 

You'd need a bigger dish than that if you wanted to cook anything in this climate, although you may pick up satellite telly! then you could stay inside and pretend the house had shrunk like a lot of people in big white campervans must do

 

In clear sun, in winter, that could easily put about 1Kw onto the bottom of a pot in Britain. Not that you get too much sun in winter. These guys are from Germany.