2013 Volt. We stopped to eat dinner and then got in the car to drive home. A little frost on inside of windshield so turned on the front defroster. The windshield immediately frosted over and had to stop in middle of the road until it cleared so I could see. Wife then told me this happens when she gets in it after work. She has to set for 3-4 minutes until it clears. This is a major safety hazard for someone new to the car driving down the road and goes to use the front defroster. Is this normal in Volts?