Near the end of the film, when Horace and Jasper are getting ready to nudge the truck with all the dalmatians off the cliff to the truck's RIGHT, the truck is going RIGHT-TO-LEFT from their view. Horace and Jasper (H & J) were also heading down a STRAIGHT road. Also, the truck is nearly at the intersection point where H & J would bump them off. However, there is more than enough time for Cruella to catch up to the truck, hit it from behind, and for one of the puppies to almost fall out of the truck and get caught by Pongo. As the truck is going around a couple CURVES (not seen in the original shot of H & J bearing down on the truck), note that the cliff is now on the truck's LEFT. And when H & J finally run into Cruella and the truck (hitting Cruella and missing the truck), after ZIG-ZAGGING down their road, the truck is going from LEFT-TO-RIGHT by their view.