The relentless march of the self-driving car is in danger of grinding to a halt in Australia because the technology cannot cope with kangaroos.

While other large animals walk, run, trot of lope - kangaroos jump.

This has proved all too much for Volvo, the Guardian reported.

In fact, Volvo has been trying to solve the kangaroo problem for nearly two years, having sent experts to examine them in their natural habitat in 2015.

There are more than 16,000 kangaroo collisions on Australia's roads, which cost the insurance industry just over £44 million.

The company has been working on tweaking its self-braking system to deal with the problem.