Mt Whitney Zone Forums General Discussion Mountaineer's Route: Tackling the final 400' in January

Why yes, there is:
http://www.whitneyportalstore.com/forum/...age=1#Post82101

Which is something the OP should think about as well. These guys and gal seemed to have a lot of time on their hands. If the OP has job commitments, this situation could get sticky with the employer and/or the rental car company.