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We really don't have to limit it to houses and cars only, just generally as a Nigerian what would you do with 1 BTC? Get a business, trade , hodl, real estate and many others...
I will buy a bulletproof car with it...lol

Anyone in the country who has the privilege to own 1 BTC and later become poor should be bittered with. That amount is about N108,000,000, it's big enough to rescue you and your entire family from poverty if well-utilised. For me, I will divide the utilisation into business and investment, and that investment will be both online and offline.
Bitcoin, Gold and Stock/Index markets will take care of the online investment, and of course, landed property and real estate will take care of the online investment. I will then proceed into agriculture and other wholesale and retail businesses. I don't think I can ever be poor again with this distribution.