It's actually not a bad financial decision at all relative to other cars. Reasonably specced Model S montly lease costs after tax benefits come out to well under $1000/month. That's on par with a mid-high spec E-class or 5-series. Now factor in fuel savings and small business lease write off. Plus access to carpool lanes during peak hours and prime parkin spots.

I am self-employed/own a company. They are basically business leases so written off nearly 100%.