I am traveling from the Rio Grande Valley of Texas to Alaska and need lots of advice. Since the weather is so different at both ends of our trip I need to know what to do to prepare my car. Also how many days would it take to travel from the Rio Grande Valley in Texas to Petersburg, Alaska. I plan on traveling through El Paso, TX, Phoenix, AZ, Las Vegas, Reno, NV, Sacramento, CA, Eugene, OR, and up to Canada to Prince Rupert, BC. and there take the ferry. I really don't want to go through large cities but I do want to travel on large interstate Highways. Do you thing this would be a good route? I picked the southwestern United States route because we are traveling at Christmas time and I want to avoid snow country as much as possible. Please someone help with this trip.