We have a saying in Holland, that if something looks to good (or to cheap) to be truth, it usually is.
The Drymer, the dutch variant of this vehicle, has a plexiglass roof as well. To make this roof out of one piece, costs, to produce, twice as much as this Sinclair X1.
I will keep on hoping, but I am afraid that this vehicle will not be seen on our roads, pretty soon, if ever.
greetz
Frank