Well, not. However, I have had experience with Lido and a couple of others who use spring-loaded clamps; they flat don't work for amateur radio, even when holding (?) just the head.
Lido does made a goose neck mount which attaches to a seat bolt, and they're okay as they use screws.
Think of things this way. If you're ever in an accident, what happens to that 3 pound brick as it bounces around the interior of your vehicle?
If you want some down to earth info on mounts, go to my web site.http://www.k0bg.com