For those that do not want to read through 7 pages of mostly unrelated text, here is the answer I found in txinvestigator's guide. At least I think it's the answer.
Now, having said that; I do recommend reading all of his guide and referencing it for future questions. It's good material, very informative. But, it is a little much to throw a book with the answer "somewhere" within it's text at someone who asks a fairly direct and simple question.
Penal Code section 46.02 also states that it is not an offense if the handgun, illegal knife of club is carried on your own premises or premises under your control, or if you are inside of or directly en route from your residence to a motor vehicle that you own or are in control of. That section goes on to state 4 restrictions for handgun carry in a motor vehicle. The handgun must not be in plain view, you must not be a member of a criminal street gang, you cannot be prohibited by law from possessing a firearm, and you cannot be in the commission of a crime at the time. Traffic offenses that are class C misdemeanors do not count, nor do city ordinance violations. These restriction only apply to the handgun. This section requires the handgun be concealed.
Now, having said that; I do recommend reading all of his guide and referencing it for future questions. It's good material, very informative. But, it is a little much to throw a book with the answer "somewhere" within it's text at someone who asks a fairly direct and simple question.