Viscosity has nothing to do with what makes oil a "Racing Oil."Racing motor oil is usually too high of viscosity, does not meet manufacturer specs for Hyundai and will void your warranty (if there is an engine problem in any way related to oil and they find out what you used).
The additives manufacturers add to the oil is mainly what separates street car oil from racing oils. The larger ZDDP conentrations (Zinc and Phosphorus ppm) is why you would want to stay away from these oils in modern emission control vehicles. The zinc and phosphorus leaves a coating that will eventually destroy a catalytic converter.
Leave the VR1 in your big block Ford, but I'm sure you already knew that. And also 5000 miles on dino oil is pushing it in my book. Changing the oil only twice a year with VR1 is not something I would recommend, regardless of how few miles you put inbetween oil changes.