Am thinking of driving from So. California to Champaign-Urbana. Objective is to deliver car to daughter. Will have my husband to share driving. Would like to go through Las Vegas if possible. I am totally lost and would appreciate anybody's opinions. Route 70 up through Denver or route 40? If we do route 70 are there mountains to contend with? Have two weeks but would like to do in 7-10 days. Thanks for all responses.