I loved this one. Great twist ending. Admittedly, it could have been just a touch less vague in the transition, but by the end, I got that Tammy Lynn had become the Keeper of the Mummy, so-to-speak, a fact driven home when she catches the reflection of her eyes, glowing green like the truck driver from which she inherited this fate.
The only thing I wasn't clear on was exactly why she picked up the curse. Kaa mentioned it might have been because she shoved Jim in rather than the other guy, which is possible, but I got the feeling the truck driver was expecting this. If he was accidentally released from the curse, I think his reaction would have been more relief or excitement. Instead, he was sort of sorry and melancholy about the transition, sympathetic even, like he knew this was going to happen. But if so, how did he know it would happen? My first thought was that maybe it just passed on to the next person, but the truck driver seems to have been at this for years, so that can't be it. Maybe there's a set number of souls he has to feed, and he reached that, but if so, how did he know that number?
Anyway, whatever the reason, I still loved it. As Flint said, this was an awesome portrayal of a mundane setting suddenly turned fantastic, with dire consequences. Well done.
And I'll agree that the narration was perfect.