whilst i was in the waiting room at the hospital waiting for my 6wk postnatal check i saw an "ad" on the tv they had on the hospital tv saying that you should avoid using car seat for long in new babies - especially for journeys over 2hrs... i forgot to ask the midwife about this when i went in - but now am quie concerned as we are planning a trip to london this weekend - it will be a day trip..about 100miles to london so now i dont know what to do am considering not going.. any advise or experiences?