Snakes seek warmth. I run warm. Very warm. Snakes will seek me out while I sleep. I just know it. Which leads me to the conclusion that the other guys should probably plan on splitting the driving to Minneapolis on that last day because I will at that point not have slept in two days. Should we happen to see a snake of any size or variety early in the trip, it is possible that I may not sleep for a week, or more likely, will not leave the car. Ever.
According to Wikipedia, prairie rattlers routinely grow to an adult size of over 100cm. In real measurement, that's over 3 feet. Or 120cm. Which is 4 feet. It wouldn't take one that big to do me in. I have a vision of the Last Moments of Eric going something like this...
A hiker, having the time of his life, is bopping along the trail when he rounds a sharp bend and sees a couple of little rattlesnakes on the trail mere feet in front of him. One of the cute little snakes shakes its rattle at the hiker. The hiker's eyes roll back in his head, he clutches his chest, and flops to the ground like a dead fish. The little rattlesnake turns and looks at his buddy, smiles, and says "wow! that was the easiest one ever!"
So in the immortal words of Sallah: "Snakes. Very Dangerous. You go first."