In case anyone is having difficulty finding one of those spring loaded fold-able sun shades. The ones measuring around 35" x 75" (90cm x 190cm) fits. These are the ones with the fabric sewn around two circular pieces of metal. Once folded/collapsed, it also fits in the door pocket for storage.
I'm not going to provide any links but I hope this is helpful to someone.
IMG_5679 by tk_1971, on Flickr
I'm not going to provide any links but I hope this is helpful to someone.
IMG_5679 by tk_1971, on Flickr