Reason being that my friends son is becoming an utter nightmare and has started taking his belt off mid journey. He is nearly 4 and is autistic so the usual reasoning/bribes/bollocking doesn't do the job. She was in tears having had a nightmare journey on the motorway with him climbing over the seats. I wondered whether any of you wise ladies have ever heard of a child-proof seat belt cover type thing or have a fab idea that would do the job. Or even something really obvious that we haven't thought of yet! Many thanks.