Any one try hot and cold aging?

[sambo]

Talking to, and trying a guys rum, at the brew store. He said it was three days old and he had put about 2 oz of, light chard French oak chips in it. He then puts it in the sun all day, and then in the freezer over night. He just repeats this, day for day. I can easily say it's the best booze I've ever had. Is this anything new or just a great idea?