？
What's the boss's car model and color?
Literal
President-honorific [genitive-の] car-model [and-と] color [topic-は]?
An elliptical question — the predicate (何ですか?) is dropped, leaving just the topic. 社長 ('company president') with さん added is more polite than just 社長. 車種 ('car model/type') is a compound: 車 (car) + 種 (kind). The conjunctive と joins the two things being asked about.