As the title suggests, are there any mods out yet that add some sort of vehicle or horse or whatever to help speed up manual travel? As compared to playing Oblivion, it is a PAIN to walk long distances to undiscovered locations in my power armor and it's really starting to irk me.

Not tried it myself, but I heard others like it. http://www.newvegasnexus.com/downloads/file.php?id=37083