Its the Girl in the Red Truck Charlie Brown (1988)

Spike waves to a young woman driving a red pickup truck through the desert of Needles California every day it is the highlight of his day In this combined animated and liveaction special we meet an aerobics instructor Jenny who wants to be a big city jazz dancer She and Spike drive around looking at the desert scenery and spending some time at a roller rink However when Spike is accidentally thrown out of the skating rink he runs off and is pursued by people on a nighttime coyote hunt