Five minutes online and I see many replacement keys for sale, Yamaha, club car, etc. There are also many different keypads available. I will be getting a unique key before my new cart leaves the dealership. This is real indicator that TV is fairly safe. The GC key commonality would allow thefts on an epidemic scale. The fact GC thefts are not rampant says a lot of good things about TV.
Amazon.com : (2)Yamaha G14, G16, G19, G22, G29/Drive Gas/Electric Golf Cart Replacement Ignition Keys : Golf Cart Accessories : Sports & Outdoors
Golf Cart Keys & Key Switch Parts | BlockbusterGolfCarts.com
Key - Yamaha G11 - G22
E-Z-GO Keypad Ignition Kit
The Cart Key