how'd you make them?
1" x 6" boards with a combination of 2" nails and 2' lag screws through them. The lag screws get stuck in the tires and are ripped back out from the force tearing the tire. I smoothed a spot on the far side of the road to lay it so it couldn't be seen and attached a strong fishing line to it to the other side of the road. When the car came I jerked it out in front of them by pulling the string. I've got another all ready to go for this weekend!
I find this hard to believe, but it sounds ingenius!
It ain't purty but it ruins tires and that's all I care about
You do realize you could go to prison for doing that. Oh yes! You could get your ass thrown into prison. What if your board goes up through the floor board and kills on of them? You're playing with fire!