Audi has become the latest brand to raise its game in the world of autonomy by today launching its new A8, which offers Level 3 technology - meaning it's possible to take your hands off the wheel.

That is, if it is legal in your respective country to do so, which is highly unlikely.

Imagining a future of self-driving where these obstacles no longer apply, Audi has adopted the phrase 'the 25th hour'.

2017 Audi A8 revealed as brand's most high-tech model yet

This stems from its research showing that people worldwide spend an average of 50 minutes a day in traffic. So the 25th hour, according to Audi, is the extra hour you can get back if your car is self-driving. 

The car maker has carried out research to discover the perfect setting for passengers to get on with their daily lives while the car drives itself. 

Audi split up people's time into a number of categories: productive time (working), quality time (family) and downtime. 

It built a capsule emulating a self-driving car's interior and tested 30 "young, techy millennials" to see what distracted them in-car.

This test focused on the best environment for productive time, which means that you can work for another hour in your day just in case you don't do enough already…

So what did the research find? There were three focuses: sound, light and digital.

Audi found that people were most productive when road noise was blocked out and soothing music such as waterfall sounds was played.

Light with a gentle blue tint also helped concentration.

Digital - in this context, when the car windows become screens - was best for productivity when there wasn't too much going on, such as advertising.

None of this is awfully surprising (I know I don't want to see advertising or hear someone else's music choices when I'm working), but it does demonstrate a vision of how we might work in the future. The inside of you car could well become a better office space than an actual office space, totally personalised to your preferences and with no distractions.

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