Zavvy the Husky learns 'muzzle on'

Zavvy is a 4 year old rescue Husky from an unknown past that seems to have left emotional scars.
He is learning to take a muzzle because he has anxiety in the car, which he ends up lashing out on his fur brother Valiant the Bully.
With this basket muzzle he can eat, drink, and pant. He just cant hurt his little brother with his teeth.
Yes, we are working on the bottom line, but it takes time. And they get along any other time, Just not in the car.
100% positive reinforcement has worked wonders these past 15 months. He has over come many obstacles and soon he will overcome this one too.

[djdup]

How did you train him to do that. I am suffering with a 14 month old