We are very excited about our trip to the US in Dec and Jan (we live in Perth, Western Australia). We are visiting friends in Denver and Orange County and thought we could drive from Denver to LA. We would be leaving around 10 Jan 2012 and have only three or four days. We will be traveling with our two girls aged 10 and 8. We know it is probably a crazy idea given the time of year but probably the only opportunity for us to get to America. Any suggestions on places to visit, accommodation, best car to hire, hints etc, would be very much appreciated.