By the way, I would like to emphasize that this list of books is Not Just for Girls. Just as unjust, in my opinion, as raising a girl who thought trucks were only for boys would be raising a boy who would tell her so.
Girl with truck (and new sibling).
Maisy Drives the Bus by Lucy Cousins (Candlewick, $3.99)
Female mouse (who is not gender-marked) with bus.
Machines at Work (also Trucks, and Planes) by Byron Barton (HarperFestival, $7.99)
Construction trucks (and other vehicles) with male and female drivers.
The Bus for Us by Suzanne Bloom (Boyds Mills Press, $6.95)
Various vehicles with male and female drivers.
Digger, Dozer, Dumper by Hope Vestergaard (Candlewick, $15.99)
And finally, construction trucks personified, with both male and female (and neutral) pronouns, plus male and female kids/drivers!
Jennifer Sheffield, November 2013