So I hear that Tesla is going to accept Bitcoinbase for cars, and I guess this means it's about time to announce that if you click 'add to cart' for a Solar Electric Tractor ( https://www.7el.us/shop/solar-electric-tractor-48 ) we will be happy to accept any of the following as payment:
CMEgroup short positions in Bitcoin 
NASDAQ short positions in Tesla 
Bitcoinbase through coinbase.com
Native Bitcoin (pre-segwit) TXes
Grantcoin/Manna cryptocurrency for 1,000,000 GRT (or Manna) per tractor.
Of these payment systems, the only one(s) of which I really trust are derived from Grantcoin, with a money supply managed by the Hedge For Humanity 501c(3) either directly or in partnership with 7 Elements LLC as the code maintainer and professional services provider.
All other payment methods may involve substantial re-insurance transaction costs and regulatory overhead.
* DISCLAIMER* due to speculative #gamestonk antics by people with large twitter followings, all of these payment methods are subject to change and it may cost you substantially fewer coins or short positions to buy a tractor a month from now than the currently quoted exchange rates.