Taking your baby for a drive in the middle of the night to get them to sleep is a tried and tested method that's been around since the car was invented.
But did you realise how many miles that journey to the Land of Nod takes – and how much it costs you? Now all can be revealed thanks to a survey of 1,000 parents by Mothercare.
It found that parents of newborns drive the equivalent of John O'Groats to Land's End one and a half times a year - spending an average of £547 on petrol - to get their newborn to sleep.
More than half of all parents (56 per cent) use their cars as a 'drop-off-to-sleep' vehicle at least once a week - with the average journey starting at 9pm and lasting nearly half an hour.
New dads get behind the wheel the most driving an average of 1,827 miles in the first year compared to mums who only drive 860 miles.
Parents from London drive the furthest distance a year (2,957 miles) closely followed by the East of England (1,987 miles) and Scotland (1,420 miles).
Now Mothercare has recruited its youngest-ever product tester - 17 month-old Zara Kazim from London - who has spent the last two weeks putting the retailer's range of car seats to the test against an Average Baby Sleep (ABS) rating.
Topping the list was the Mothercare Malmo Car Seat, which sent Zara to sleep in just 10.37 minutes. The Sport Car Seat came second registering an ABS of 15.25 minutes, followed by the Madrid Highback Booster (18.41 minutes).
Steve Abse, Director of Marketing from Mothercare said: "We understand our customers' needs and we've listened to the challenges they face with at bedtime.
"Our vast product offering and expert car fitting service ensures our customers and their newborns are in safe hands when purchasing their first car seat. Now with our tried and tested experiment we can help calm bed time stress, save time and save money for parents."