I'm writing this down as much for my own reference as any other purpose, because it was just so odd.
I found myself walking in along an access road to what was fairly obviously a Grand Prix style racetrack. Even if it hadn't been recognizeable as such, the Formula 1 car being pushed backwards nearby (a six-wheeled design very similar to a March 2-4-0) would have been pretty much a dead giveaway. I wandered over to ask if the single pit crewman doing the pushing needed a hand, but was stopped by someone who basically asked if I was authorized to be there. I looked around me, thought a moment, and said I guessed not, so I should probably leave; he said no, that's OK, it's not a problem, there's latitude in the track rules. I followed him to what seemed a large barn-like or hangar-like structure, open along one entire side, with a raised floor of what appeared to be deeply eroded yellow ... sandstone, maybe, with puddles of standing water, and yet set up with stands for people working on racebikes. For some reason this didn't seem in the least incongruous; the water did, however, cause me to notice that I had no shoes on, only socks.
Continuing through this building, we ended up at a service counter which seemed to be at the top of the stands. We didn't, to my knowledge, climb any steps to get there from ground level. Sometime along about here I realized that my back was hurting — I think maybe someone accidentally nudged me, and it was very tender — and when I lifted my shirt to look, there was a reddened patch on my back that was beginning to ooze blood with some kind of whitish matter in it. My self-appointed guide, upon seeing this, called for a medic, akd asked where I'd come from, at which point I realized that not only did I not know where I'd come from, but I had no idea where I was, how I'd gotten there, or even who I was. We quickly discovered that I had no identifying information on me, and could remember nothing prior to wallking up the access road.
By the time the medic arrived a couple of minutes later, the reddened patch was spreading with almost visible speed. He took a quick look, as the first person asked whether it was an infection, and replied with a somewhat tentative opinion that it looked like some kind of radiation burn or possibly a glancing energy-weapon burn.
This is the point at which they both looked at me, looked at each other, and said, "He must be from the starship."