Yes, when you book Avis car rentals in Houston, you have the option of choosing a vehicle from the Avis Signature series. Avis has three branches of their signature series. The first is the Sport, Convertible, and Muscle Cars Series. The second series is the Luxury SUVs Series, where you can rent vehicles such as a Mercedes-Benz GLS 450 Luxury SUV. Their third branch of the signature series is Premium Sedans.