Stacy, I have wondered that, too. I transport mine in a pet taxi crate when mine go in the car. I bought a booster seat and a harness that seatbelts them in, but I don't use it because Bandit could come right out of the harness. I didn't see where it would be a bit of good in a wreck. I wonder how much good being in the kennel, which is seatbelted in would actually do, but I must assume it is better than being completely loose in the car. I actually returned the booster, but I am stuck with the car seatbelt harness that I doubt he will ever fit in properly enough to use. (and I bought the small size.) maybe some other people on here have had luck with some of these non-crate restraint devices.
The site is loading SOOOOOOOOOO slowly for me today, that I am not going to take the time to go back and read the responses you got that you are referring to. Therefore, if someone said something harsh, I am not singling you out here. What I am trying to say is, (and at the risk of offending some folks, I suppose) I have noticed responses (and on rare occasion experienced them myself) that surprised and shocked me on many issues in the past. I am not saying that the responses didn't have a legitimate point, but I am saying that posters could take some lessons in tact. I think that the approach used often just offends the person seeking advice and might even make them abandon getting help. Perhaps instead of attacking the poster, responders could concentrate on attacking the problem being expressed, or point out the problem with a poster's actions or methods factually instead of slamming the poster.
On another note, the overwhelming bulk of messages on here are helpful and this is a wonderful community of people. I just would hate to think that people begin to stay away due to a judgmental attitude or lack of sensitivity by other members of the community. As the saying goes, you catch more flies with honey than you do with vinegar.