I think what you’re doing is healthy as long as you’re not making a huge scene and can keep it controlled to while you’re in the car. I’m a mess behind the wheel. Screaming to others. To myself. When I was younger and lived at home, I would take rides to the country and just scream it out. Punch the wheel. Blast my music (and smoke the occasional dooby lol). It’s healthy. I also like screaming into a pillow or punching it. Now as long as we’re not kicking and screaming in the middle of the grocery store, I think it’s ok. And don’t worry about work if you happen to mumble to yourself a bit. I’ve seen people completely lose it as work. Myself included. I don’t recommend that though.