Hi, I'm going to Las Vegas with some friends in a few days. We'll be driving down Saturday & Sunday (through CA, stopping in Bakersfield), we have hotel reservations in Las Vegas for Sunday & Monday nights, and were planning to drive back over Tuesday & Wednesday. Unfortunately we found out we need to be back in Portland, OR by 10am on Wednesday. Sooooooo.... If we leave Tuesday morning - what's the fastest way to get from Las Vegas to Portland OR.