reflextics - well the shiny bubble wrap type stuff

[Nissi]

I have the Nissan Cargo Van... very large window.
I cut the reflextic, and put a slit in it so it would fit around the mirror.
Then I put my visors down, and this holds the reflextic in place.
Not as tight as the side windows, but at night they work just fine so
no one can see in and not much light can be seen around the edges.

As far as during the day, the front window reflextic works great as a sun
block, and really knocks down the HUGE amount of heat coming in from
the sun. Because it works so well I have not tried to make it "tight".

Have you tried just cutting it to size and putting it in your van as I mentioned above?