Flat tire

Here you go guys. This is a very simple draft that I wrote in about ten minutes, having thought of it on a late walk home. Don't think too harshly on it.

---------------------------------------------------------------------------------------------------------------------------
You're driving along the highway at night when your headlights show a silhouette of a man. He's wearing an old trench coat and a large hat, similar to a sombrero. He holds his hand out and thumbs you to slow for him.
You slow down to pick him up, and he comes up to the driver's window. The shadows and his hat hide his face, and he speaks with a slight Texan accent. "Much obliged sir, I'd been wondering whether anyone would stop for me. My car's gotten itself a flat tire and I was hoping someone would be kind enough to help me fix it."
You get out of your seat to see the man's car and he leads you just slightly off the main highway.
In the driver's seat of that car though, you can see someone sitting there. A woman. She's not moving, and the man behind you simply says, "my wife."
You wave and say a casual hello to the woman, but she doesn't move. As you get closer you can see why. The woman has been impaled on her seat by a large knife- it goes through her chest and embeds itself in the seat behind, keeping her propped upright. Blood still drips from the wound, showing it was only recent. Her throat has been slashed open, and the crimson shines softly in the headlights.

You stop and gape, feeling sick. But it gets worse. She has no vocal cords and thus no voice, but her head turns and looks at you. "Run," she mouths. A single word. Frozen until now, you break free of her paralyzing stare to sprint back to your car. You jump into your seat and take off into the night, driving away from the horrific scene.
Suddenly, you hear a loud "POP!" as the front tire explodes and you frantically swerve and brake. Finally, you come to a complete stop, just off the highway.
Breathing heavily, you wonder what could have caused the sudden explosion, but the hairs on the back of your neck raise as in your rear view mirror you see the silhouette of a man with a large hat walking towards the car. Panicking, you try to start the car up, but it won't work.
The last thing you see is a flash of steel as a blade is drawn across your neck.

The man, his work finished, moves out onto the highway, and after a few minutes sees the headlights of a car coming. He walks out and holds up his thumb, signaling them to stop.

Update

I know I haven't been posting much here, not that I expect many people to be reading this anyway. I have several half-written stories I haven't finished because I refuse to upload them unless they are sufficiently completed.
Nevertheless, I have the drive to write a longer-fantasy based adventure story that's been on my mind for a little while. I'll release it in chapters  most like, whenever I finish each one.
-Amino