continuing objects

Hi,

I've used 3dfa for few years doing simple stuff now trying something little more complicated and I'm stuck!

I have a scene where there are a row of homes with clouds moving to right and a single lane road infront of the row of homes. Now what I'm stuck on is multi types of vehicles in png format(cars, buses,tow truck,etc.) what I'm trying to do is get them to move in either direction looping and having different ones stop and have popup thought bubble while rest of traffic continues to move.

I've tried with animated paths problem is can't get multi vehicles to move with a more realist action they either move same speed or they wait until first vehicle completes the path before next one start.

I hope I explained this ok I real could use some help!

Can you upload an example movie file?
This would be very helpful.

We can easily solve this problem with a short script that handles the car movement. I will upload a sample for you later, but it would be better if you try to upload your movie so we can embed it directly into your project.