My 2 year old DD has learned how to unbutton her car seat and she does it randomly and frequently, despite stopping the car to fix it and the usual bribery. I've had to start squeezing in the middle between her and ds to prevent button pressing, which is not at all comfortable. We have a long journey coming up with lots of motorway driving and we won't be able to stop to fix this. Please - has anyone else had an escapee toddler?! Ds used to get his arms out, but never managed to press the button. Any advice very, very welcome.