We went to SIL's for Christmas: travelled down there on Monday, had a lovely time and needed to travel back yesterday. We've done this journey several times before at this time of year, and while on a normal day it takes 5-6 hours, at Christmas it's always congested. On one infamous occasion it took nearly 12 hours to crawl home.
This year my DH was worrying about the return journey almost as soon as we arrived at SIL's. I suggested we leave yesterday at 8am to get ahead of the rush, or set off at 5pm when the worst was over. I'm happy to drive at night, particularly when most of the route is on motorways, so I volunteered to do the bulk of the driving. DH prefers to drive but doesn't like night driving. He's a terrible passenger. I've been driving 8k miles a year for nearly 40 years without problems but he still tells me when to brake or change gear.
DH decided he couldn't cope with me driving 5 hours in the dark and that it would be rude to leave at 8am because his DSis and her husband wouldn't get the lie-in they were looking forward to. So we left at midday and the journey took us 10 hours, with DH ranting and demanding that I programme Google maps to find alternate routes, or get out the road atlas and direct us through country lanes. There's something about driving distances, in particular, that brings out the worst in him.
Your worst Christmas journey?