First of all, you've been told here
to post all your modding requests in this
topic. Teleport To Marker - January 3, 2010 - Picture
I know it's not the mod you wanted, but I couldn't find anything else. Maybe if you'd tell me the name or some more details, I might be able to find it. Anyway, the mod I linked you to above is quite doing the same as the mod you said you had. It does NOT teleport you to the nearest car, but you'll be teleported somewhere where ARE cars. A highway or something if you're somewhere in the ocean. You can also travel from a corner to another the state of San Andreas. All you have to do is to install CLEO 3
(click URL for download link and installation details). Then, put the Teleport_to_marker.cs file in the CLEO folder located now after installation in the main San Andreas Directory. PLEASE NOTE
: You'll need to start a new game to be able to use this mod. Using it over a loaded save will make the game crash. Now, go to the main Menu - Map and place by using T a target on the map. Go back in the game, and press consecutively X then Y. You'll be teleported to the requested destination.