I'm new to GS. How do I get say a car to move slowly across the screen
or from top to bottom?
watch this if you want something that repeatedly scrolls across:
if you just want something that goes from one side to the other, similar concept, but add a rule to change self x velocity to 0 when the actor reaches a certain x position on the stage.
You might want to check out the series of tutorials I did for the absolute beginner to Gamesalad.
http://jamie-cross.net/posts/ ✮ Udemy: Introduction to Mobile Games Development ✮ Learn Mobile Game Development in One Day Using Gamesalad