Apparently yes, well so far it seems she will somehow be on the red carpet and support cleaner air and healthy environmental practices like low emission vehicles. Mmmm wasn't she or isn't she still driving a Mercedes? Well, I hope she dumped that one otherwise promoting those new cars but driving a Mercedes would look kinda weird.
Anyway, she's there on the red carpet and maybe she will even walk inside and maybe even end up on stage... WHO knows :D
here's the source for that info:
'Red Carpet, Green Cars' Drive-Up