Presumably Lutz, who declined comment, would advise on the design and functionality of new vehicle models, his specialty.
Even though I knew he was going to get the answer right—military, U.S. government—that was [his specialty].
I do have specialty appliances that don't live on the counter: crockpot, griddler, waffle iron, pasta machine, and so forth.
early 14c., from Middle French especialte, variant of specialite, from Latin specialitatem (nominative specialitas) "peculiarity," from specialis (see special). Speciality is attested from early 15c.; French form spécialité (especially in reference to restaurant dishes) is recorded from 1839.
specialty spe·cial·ty (spěsh'əl-tē)
A branch of medicine or surgery in which a physician specializes; the field or practice of a specialist.