There's no such thing as an incognito trip down to the shops for Brad Gaffy when he gets behind the wheel of his car.

But no matter how late he might be running, driving a DeLorean DMC-12 complete with a flux capacitor, Mr Gaffy can still make sure he gets where he's going on time.

Along with 1960s-style London police boxes, the DeLorean is pop culture shorthand for time travel.

"You take off down the road and you've got someone beside you with a camera, or behind you," Mr Gaffy said.

"You watch people's reactions on the side of the road – the other week, I was driving home and there was a guy with a young son bouncing a ball.