At no time since I've been here--ca. 1975ish was it permissible to carry a handgun except to and from your home and business
by the most direct route without stopping; to or from the range again by the most direct route without stopping, UNLESS
you were traveling OVERNIGHT and OUTSIDE the county of your residence. Those were the terms of the old travel law
as interpreted by numerous TX judges; and plenty of folks got convicted. I had a cop tell me why he really didn't like
that old travel law. He basically stated that whether or not you got arrested was partly a matter of how and you
interacted at the side of the road, as the law was 'ambiguous.' So, the first fix to the problem was to allow concealed
carry. The legislature in its wisdom determined that there would be a training requirement. As Farronwolf already pointed
out the present carry law is an extension of the castle doctrine but also a needed modification and clarification of the
travel law. Now, there is no need to worry about going someplace by the most direct route and you can stop for a Big Mac
as long as it stays in the car. IT wasn't like that before.
Going back to your first few words above. "We have always been able to travel with firearms," that is literally true but you
left out the qualifiers, overnight, out of county of your residence, by the most direct route, no stopping.