700meg episodes are HD-720p quality. If you wanted to watch them on something small, like a Zune, IPhone or Ipod, you can use DVD Fab to scrunch them down to size. I have an LG BD390 player that plays the new Top Gear mkv videos quite nicely. It's like being in England!
Clarkson and the rest of the guys at TopGear do a fabulous job, great shows. Even if you are not a car lover TopGear is a show you must see, one of the best entertaining shows in history of television.