The best solution might be to put a hood...

The car already has a very effective electric hood (the convertable top ) that works quite well at this, but here in California, I drive around with it down most of the time.

Seriously, the Empeg is mounted low in the console so an additional "shade" would not be practical. I did consider this and was hoping the 3M louvered filter would help more than it did.

Guess the Empeg EL panel is no match for a photon war with the sun.