What's your shortest ever car journey?

[Futuramic]

Reading the reports of others, it is often a cause of celebration to complete a very long car journey; however today I made what I believe to be my shortest. This was not done out of laziness; it was raining on a Biblical scale and I didn't want to get soaked.

There is a supermarket at the end of our road. The road is about 200 yards long. The total distance, including turning into the car park, can only have been 220 yards making a round trip of about a quarter of a mile.

So what is your shortest journey between two distinct points? Discounting moving a car on a driveway etc.