Police who stopped a speeding driver in Sydney's west on Sunday night were shocked to find he was driving with his phone strapped to the steering wheel, while a toddler was wrongly restrained in the back.

The phone was displaying live score updates of the World Cup cricket match between Australia and India, as well as the navigational screen.

A driver pulled over for speeding in Sydney's west shows police how he strapped his phone to the steering wheel. Credit:NSW Police

In a video of the incident released by the Traffic and Highway Patrol Command on Monday, a police officer is almost lost for words as he informs the driver that his phone set-up is dangerous.

"There's a mobile phone on your steering wheel," the officer says, moving the wheel back and forth as the phone spins around.