Weird Shit

Okay, you know what... I'll start with the beginning.

My friends say that I'm a bit too trusting.

Last summer, I had a biking accident where I sprained (or fractured--I'm not really sure) my elbow. So it was pretty difficult to lift my bike into an upright position when my elbow was screaming in pain (I couldn't move my arm at all), and I was bleeding from a small injury on my head, and wrist, as well as the scrapes on my arms that came from contact with the cement. A piece of my tooth had also broken off.
This nice guy driving by offered to take me to the hospital and have me checked out, and drive my bike there, as well. He was a stranger. But he was nice, so I accepted.
I know what you're thinking, but it didn't happen.
He drove me to the hospital (and then drove off).
The end.

So, when I told my friends this story of how I came to have a cast (that they all signed), they were all (naturally) horrified. I promised them that I would never get into another stranger's car willingly again.
(I didn't tell them of the other time, before the hospital--but he was nice, too).

Then, yesterday, it happened again, when I was coming home from night school.
So I was standing there at the bus stop, all by myself, waiting (for what seemed like hours) for the bus, at 10:30 in the night, when this guy drives by. He sees me waiting, and says (approximately--I don't have photographic memory), "Hey, I'm going the same way. Do you want a ride?"
So, remembering the promise I made to my friends, I declined. He asked me if I was sure, 'cause it was a free ride.
Now, here's the thing. He wasn't driving an ordinary car. It was a rental limousine. He looked like he rented the limousine all the time. I had to decline again, but, all the while, I was thinking, "I could be riding in a limousine! For free!"
Sigh. So he drove off when the light went green--and I didn't get to ride in a limousine.

This is the third time it happened! I don't know what is going on, but it's weird. Do guys just do that all the time? "Oh, look, there's some helpless-looking female. I think I'll go see if she needs my help--for free."
I know my friend has sort of the same problem (what with guys accosting her on the streets all the time), but I thought that was just an anomaly. It doesn't happen to normal girls, does it?

I don't know why this is happening... I don't want to say all the time, because it isn't, so I'll say, at a frequent occurance (relatively).
But it's cool. :D
And harmless--so long as I decline.