I am going on a 5 hour road trip with my parents tomorrow. I plan on bringing my laptop to watch one of my DVDs on it. But do you need WIFI to do that? I don't think I'll get WIFI where I am sense I'm going to be in a lot of the mountain ranges.
You don't need the internet if you have the actual DVD disk with you. You would need to have a way to charge the battery for your laptop though so you may need to buy a inverter for that. Like this:
http://www.amazon.com/Wagan-2003-6-400-Watt-Continuous-Inverter/dp/B002UW7JJ6/ref=sr_1_8?s=automotive&ie=UTF8&qid=1300853235&sr=1-8
Well if you have the actual DVD then no you don't need any WiFi connection. If your going to be streaming the movie on Netflix or a website then you will be a internet connection.