Special Regs for Importing Vehicle for the Handicapped????

I ran across a conversation on another forum that may be of importance for handicapped drivers.

With all this back and forth about being handicapped, I just ran across some info that seems to indicate that under certain conditions and with certain disabilities, a foreign car may be legally imported without taxes or penalties. The following links are in Spanish but maybe Spencer would be willing to look into them to determine who might qualify:
http://abantocorp.com/requisitos_para_importar.htm
http://info4.juridicas.unam.mx/ijure/fed/11/68.htm?s=
http://www.comerciomexico.com/notas/importar-vehiculos.html