Northamptonshire Police are reminding motorists to remove snow from their cars before embarking on their journey.
Police tweeted this photograph as a stark reminder of how dangerous it can be to not remove snow from a vehicle before heading onto the roads.
It was taken on the M4 between junctions 28 and 29 just before midday today.
Stephen Sorby took this photograph when he was travelling from London to Wales with his friend. He said he couldn't believe what he had seen:
"We are outraged with what we saw, we couldn't believe anyone would drive like that. So careless to risk the lives of others." Mr Sorby estimates that the car was travelling around 60mph to 70mph.
Emergency services are warning people to take care in the snow after several reports of sledging accidents.
Tips for driving safely in winter conditions.
Here are your top tips for staying safe in the snow, courtesy of Midlands Air Ambulance.