Puffing

‘Puffing’ is Illegal in Colorado (Warming Up Your Car Unattended)
‘Puffing’ is Illegal in Colorado (Warming Up Your Car Unattended)
Leaving a car running unattended is illegal in Colorado, and you could be ticketed. You’ve been warned. It’s days like this that are the most tempting to go start your car on and run back inside while waiting for the interior to get all toasty before driving anywhere. But it wastes gas, it could get your car stolen, and is against Colorado law.