Finally looked at the maps and figured out where DD and his siting were.
The comment about staying on "this road," he could get to California. US 70 runs pretty close to parallel to I-40 (in some places they are one in the same) from the North Carolina coast until it gets to North Little Rock, AR where it heads southwest through the Quachitas toward Texas. I don't think US 70 makes it all the way to California, but it does go to Arizona.
Should any of the report from DD be accurate and BL was traveling US 70, he could be within a few miles of my house right about now. US70 through North Little Rock is a rough area tho, he wouldn't stop. He'd like the Quachitas, but it's nearly deer season and those mountains are crawling with Arkansas hunters getting their deer leases ready.