Well, I assume he thinks it's a good investment and he can make it pay back substantially more than he invested. That's the usual reason for investing in anything.

Beyond that, I'm open to suggestions. Yes, it might deliver other perks - it'd be a bit obvious if you get Tesla ads every day, but I guess we don't have to stay there if we don't like it. :-)

Saying that, $44bn isn't £100 is it. HUGE benefits would make sense. I'm intrigued to be honest! :-)

Perhaps he has massive visions of how improvements could turn it into a real money spinner!

Tesla shares were down a lot this morning, which might make him (or his lenders) feel a bit uncomfortable, because that was supposed to be the collateral for the loan.