I'm not 100 percent sure what happened to my car today if it was my transmission that blew or if it was an axle. When I started my car today and took off it felt like i was going to fast in 4 low kinda had that weird feeling. Well anyways I get about two. Blocks down the road and I hear a small grinding noise I came to a stop. The noise still there when I took off and all the sudden bam. I'm not moving the grinding is was worse so I through it in park and all the sudden my rpm and speed increases I shut off the car. I wait about 5 min. I start the car everything seems okay in park. Then I shift to neutral it does the same thing in park as in neutral. I shut off the car and got it home. 3,8 gTP no mods all stock. Does same thing in all gears when in park I move like I'm in neutral. Any ideas ??also sounds like rocks in a metal can