Kwok has been known as a collector of sports cars as well as a fan of motor racing. He is known as a car fanatic and has a large collection of notable cars. Some of his collection include the Audi R8 GT Spyder, Ferrari F50, F512M, F355 GTS, F360 Modena, Ferrari 599 GTB Fiorano, Ferrari California, Ferrari F430 Spider, Lamborghini Diablo SE30, Mercedes-Benz SL600, Mercedes CLK DTM AMG, Porsche 911 Turbo, Porsche 911 GT3 RS mk2. Other cars include the Enzo Ferrari, a Carbon version Pagani Zonda F, Lamborghini Murciélago, Gallardo, Lamborghini Aventador 50th Anniversario Roadster, Lamborghini Gallardo Superleggera, Porsche 996 GT3, Nissan GT-R.