You can't repair a dent in stainless steel, or even a scratch in it. So if it's actually used as a "trunk" it's going get ugly very fast and that's going to kill it's resale value.
It's comparable to the "HUMMER" in that it is a "Status Symbol" that will lose it's luster very quickly and it's value on the resale market will tank hard after just a few years.
Not to mention it will burn your skin like a frying pan on sunny hot days if you touch it.