I wouldn't let my dogs stick their heads out the windows of my car if I was driving at highway speeds, only when puttering around in town. Look at your windshield after the truck in front of you sends a stone your way.
Roger that.
I'm of the opinion that I wouldn't even get out of bed in the mornings, save for the pesky occasional meteorite crashing down through the roof, ruining the whole bit.
Dogs need to be dogs. My dogs hear me grabbing the truck keys off the wall, and are at the front door ready to go. Sniffing the air is part of the experience. Several local stores have a pets welcome policy, so my big St. Bernard mix has his own clientel of store clerks and cashiers. I may go to the hardware store for some parts, but it turns into a family reunion of sorts.
As part of my risk-management lifestyle, I've also taken a bumblebee in the face at highway speeds when scooting around on my Harley.
Force = Mass x Acceleration really does work, as does the nearly-expired bumblebee's stinger.