I had a tutorial but can not find it so maybe someone can help.
 It was about aligning cars on a highway so as to be aligned the right way with hwy.

What I need is to align a group of objs on a plane so they re all in perfect alignment anyway you look at them.  Does this make sense.   Think crosses in veteran cemetary. :)
 Also need to be able to have a space and adj it between obj.

I got to get organize so can find my stuff. :)

Wasnt that some e-on tutorial? Unfortunately the site is having problems currently, but i am sure e-on had a tutorial about populating a highway with cars, this is even one of the scenes that came with vue 6. Guess we need to wait untill e-on fixed the problems with the website.

I have looked but can not find it anywhere on my computer.  I know I had it saved but where is a different story.
 Not sure who wrote it but may have been zcarny roberts or maybe phoul.:)

Haha, i'm so stupid. Of course its also on e-frontier website:

http://www.e-frontier.com/article/articleview/1635/1/696/

I hope that was the one you were looking for.

Yes it was the one and a big thanks for taking time to locate it.
 Now to clear all my temp files so can save the movie file and have it so can use off link. :)

Thats the tut I was thinking about but after looking at it I am still needing some help.
  How do I add one car and make it populate as many and keep the same distance between each car.  also same distance from side to side. ............?

Easiest & fastest way I can think of off hand is to make the ecosystem and than use the select ecosystem tool to select the rows that need to be manipulated.  Then move them in whatever direction.

Quote - Yes it was the one and a big thanks for taking time to locate it.
 Now to clear all my temp files so can save the movie file and have it so can use off link. :)

Thats the tut I was thinking about but after looking at it I am still needing some help.
  How do I add one car and make it populate as many and keep the same distance between each car.  also same distance from side to side. ............?

Ecosystem is meant to randomly distribute copies of an object or plant. If you are planning on making a long queue of cars with each having the same direction and distance from each other, then why not just making an array from one car? While holding alt key move the car, you will have moved a copy. now just hit the * (asterisk) key on your num pad (numlock should be turned on), it will ask you for a number, just choose 10 and hit enter key to have a queue of 10 cars all straight up in a line.

For an ecosystem i would recommend the following settings:

Tab Density: Choose "Force regular alignment of instances"
Tab Scaling and orientation: Choose "Maximum rotation to 0", "Maximum size variation to 0"

With the density tab you can control the distance, "Avoid overlapping instances" will not be available. The other settings should be like vue default when you create a new ecosystem from the basic material.

If your road is wide enough to allow 2 cars beneath each other (depends on density setting), it may look very odd, if you want to populate a 2 lane road and not have it looking like a military parade, then split the road in 2 objects placed beneath each other so you cant see its actually 2 objects. Then move one of them so the car queues have a variation, making it look at least a bit more realistic (although having same distance for every instance is already killing the feeling of realism, no variation here).

Thanks to both of you for the good advice.
  I am trying to make a veterans cemetary and have the crosses to line up as they  do in real life.
That might give you a bett idea of what I am doing. :)