travel or trip planning or hotel/motel websites not because they're necessarily evil, but because they mainly exist ONLY to sell their product(s) (whether or not they are genuinely useful to you) and if you want to go motel-shopping or ticket-buying, you can find all the main websites for that on Google or AltaVista or Yahoo.
Anyway... I came across a nifty little website that actually seems like several websites under one banner, all of them seemingly useful and/or entertaining. It's called "Roadtrip America" and from their main homepage, you can navigate to such topics as Routes, Destinations, Events or Preparation Tips or Carefully Selected Links to the Best Web Resources or Snackin' Better on the Road or Personal Trip Journals or Fuel Cost Calculator or RoadTrip Recipes or Roadside Eateries (don't miss the fun photo tour of historic diners) or Roadside Wonders or Scenic Drives or Trains & Railroads or Roadside Americana or Funny Road Signs or RoadTrip Gear: Articles & Product Reviews and a whole lot of other actually useful information.
If you still have a hankering for luxury accomodations and travelling in extremely wealthy style and you have the pocketbook to accomodate it, you can always check out the Forbes website.