Magnet Track Craft - The car is guided by a magnet on a popsicle stick. Recommended by Andrea Beaty, author of Rosie Revere Engineer.
Roundup post with lots of fun Montessori-inspired construction activities for preschoolers. Would leave out the "hide the vegetables" montessori aspect though.
Printable car play mats with numbers. Motivating number activity for kindergarten or preschool.
Transportation activities: FREE Beginning Sounds Transportation Clip It Cards - Liz's Early Learning Spot
Caminhão de bombeiro | Estadinho