I found TRO:VA very useful. But then, I run used to run a lot of MW RPG games. Since my players are still Jihaded out, 4th ed. is awful, and Heavy Metal is both out of date, and (I'm told) doesn't work with Windows 7, its going to be a while before I do so again.
But numerous designs from that book were utilized in my games - either directly, or as a basis for what one could actually find on the streets of random city. As opposed to street cars that have 30+ MPs.