I've parked in the official car park for years, and literally me and my lad would sprint from family stand to the car at the final whistle, I'd be fucked by the time I got there, but could then get out of car park and beat the traffic lights - it just irritated me though as it was just an unnecessary stress, but being a lazy **** I just got set in my ways.
Finally ditched it this season, park 10 minutes walk away for free, nice leisurely stroll after the game back to the car, home pretty much same time as I ever was.