While riding in an ambulance on Thursday morning, Jay Loosley spotted a van on London's Wonderland Road with its entire back end covered in snow.
He took a photo and tweeted it out, as a reminder to drivers that they are putting other people at risk by refusing to clear off their cars.
And yet the van that Loosley snapped a photo of wasn't the only vehicle like this on London roads on Thursday.
"A lot of cars with snow-covered windows, brake lights, headlights, side windows, front windows," said Loosley, the superintendent of education for the Middlesex-London EMS.
"When it's snowy, people just don't take the time to clean off their cars," he added.
But they should.
"Just please, clean your windows off," said Loosely. "Make sure you can see because if you can't see anything else, then nobody can see you. So, you've just really got to be safe."