You drive 190 miles for a major event a couple of cities over. It’s only 190 miles so you don’t refuel on the way, but your family car has a rough range of 400 miles on your average day, so you’re going to refuel on the way back to leave a little wiggle-room. You didn’t bring the kids this time so you drive the entire way without stopping (although your bladder is beginning to get uncomfortable). Parking is a nightmare, every major car park near the venue is full to overflowing. You park 3 miles away and walk to the venue, stopping at a random McDonalds on the way to relieve your now ready-to-burst bladder.

Or in another world, you pull into the venues car park itself. There’s a handful of bays put aside for people with vehicles like yours. You park, you again insert the ‘nozzle’ into your car and it starts fuelling. Very slowly mind you, but this event is going to take most of the day. You’re at the venue already so you quickly nip into the nearest toilet before you get uncomfortable. You enjoy your event and return to the car to find that it has again been magically refuelled — this time, it didn’t cost you a penny. You quietly grin to yourself as you start your drive home and see all the gas stations nearby quickly fill up with other attendees making their own trips home, and since they’re refuelling now the traffic ahead is clear and you get to skip the queue. You arrive home on time. The tank is nearly empty mind save for 30 miles worth or so, but that’s fine. Just like the other night you’ll wake up to it full again.