By Jonathan Davies

Commuters in London's business district witnessed one of the most daring and extreme publicity stunts, as the new Jaguar XF was driven across the Thames on a high-wire.

Only two 34mm carbon wires supported the car's weight, suspended 18 metres above the Thames, as it made the three minute journey across the river.

Hollywood stuntman Jim Dowdall, who has worked on the Bond, Bourne and Indiana Jones films, was in the driver's seat for the 240 metre journey - the longest on the 34mm wires at 18m.

The stunt was supposed to show off the Jaguar XF's "poise, agility and dramatic good looks" as well as its "lightweight credentials".

Fiona Pargeter, Global PR Communications Director for Jaguar Land Rover said: “Canary Wharf’s commuters stood still... when they saw what the XF was doing; it was lovely to bring a smile to their faces on their way to work. It seemed like the rush hour hustle stopped for a few minutes as the XF made its graceful journey above the water.”

Jim Dowdall, said: "Over my 35 years in the industry I’ve driven Jaguars on many Hollywood movie sets. However the biggest test for me on this stunt was the unpredictability of the elements. Potential oscillation in the high-wires from wind speeds meant it added a real challenge. The wires are only 34mm in diameter so the journey required absolute precision, balance and control.”

Did you see the XF cross the Thames on your morning commute? Is this the most extreme publicity stunt you've ever seen? Let us know on Twitter @freshbusiness.