We are just off to europe towing our qpod and will be doing about 2000 miles over a month. I bought a second hand twin motorbike trailer off ebay and modified it so we can get the pod completely off the road. I think in Germany (and poss france) you may not be legally allowed to tow it on its own wheels as its not a motorway legal vehicle - but dont quote me on this. We just didnt want the risk of a qpod rear tyre blowing out or a wheel bearing failing whilst flying down a motorway...... Not sure about you but I dont have a spare Qpod rear wheel and tyre handy.
Hope this helps