I know.. I do too much driving as it is, but now have a small one at 7 weeks old who just doesn't want to sleep and let anyone else around him sleep... first time its happenned and I think it just caught up. Normally I'm pretty good with distance driving - used to live in Antwerp, Belgium and always drove there via Dover from Northampton. That was a 3 hour journey to Dover and then 2-3 hours to Antwerp and never once fell asleep.