Alone? Depends on how much and far you need to travel. Last time I was there, we drove down, but hired a driver for Monterrey traffic.
Mexico Security Memo: Oct. 1, 2007
http://www.freerepublic.com/focus/f-news/1905103/posts
Let me know if there are any updates on the bodies found at China when you get back.
Vaya con Dios.
Sept. 26
The body of an unidentified man was found along a highway near Monterrey, Nuevo Leon state. Police said the man was shot at least five times and was dressed in women’s clothing.
Sept. 29
An unidentified man was shot to death in downtown Monterrey, Nuevo Leon state. The man reportedly was armed with a pistol.