Even if the word car it's "feminine" (Italian) in normal language it's a thing ,with a female word but still a thing; it wont be confused with a female person. Same for bike.
Now that i think truck, kart,steering wheel, tyre, engine, lights, etc. are all "masculine" words in Italian, car it's feminine; bah grammar...
For what i know in spanish it's "masculine" (el coche).