I had a similar idea when I was much more young. Actually, having a freeway along the border where cars have right-of-way would probably be more politically correct. I say that, not because I mean it, but to prove a point: people think that only an idiot to run into a freeway, but when you have warning signs of land mines, they think it's perfectly sane to walk through a land mine anyway.
Conclusion: we need non-lethal mines, I guess. Knockout gas, maybe. Or a cactus wall. Thorns. Etc.
They run across I-10 every morning in El Paso.
I'm trying to restrain my "bad posts" gene, but you hit a nerve:
"..people think that only an idiot to run into a freeway..."
Not so. I don't live on the border, but I'm not that far, and these ***IMBECILES*** walk - yes, walk across the Interstates constantly. Rush hour, 2:00 AM, no diff. They're lazy pigs who take the shortest distance.
And if you hit one, you'd probably not be prosecuted by the state, but the ambulance chasers down here would crucify you with the civil suit.
/rant off.