Seems great in practice, but wait until someone with the slightest hint of paranoia misattributes a threat against their car, to a threat against their safety.

One of three things happen:

• Driver freaks out and freezes up.
• Driver freaks out and speeds away (possibly causing an accident)
• Driver freaks out and aims their car at you and puts their foot down.

@mondoman712
I fashioned a large, hand held metal stop sign on a board. That’s why I carry when I cross busy streets in my neighborhood. I hold it out in front of myself like a flag. Drivers will slow if they think they might hit a big piece of metal. And drivers will bully soft fleshy humans with the threat of great bodily harm. It’s not very nice but it helps keep me alive.