There's always talk about the planes and houses billionaires own, but what about the more obscure and unique toys that they splurge on? Antonina Jedrzejczak and Gus Lubin from Business Insider tell us more.

A life-sized shark, Da Vinci's journal, and Hitler's Mercedes are just some of the things that get the world's wealthiest putting down their hard earned (or in many cases, easily inherited) cash.

So who owns the Batmobile?