Elon Musk is associated with many things, but subtlety is not one of them. Tesla's boss once again displayed his knack for riling up the competition with a simple, but savage, tweet. This week, Ford shared its sustainability plans for the future, which includes launching 40 electrified vehicles by 2022 and a greater goal of being 100 percent carbon neutral by 2050. It's that last point that Musk wasn't especially impressed with as he tweeted Ford and said simply: "Could be slightly faster." Ouch. That's one way to take the shine off a big week for Ford, as it also unveiled the brand new F-150 truck.

Obviously, Musk believes that Ford's 2050 goal - 30 years from now - isn't worthy of much praise. In a sense, one can understand Musk's take on things. For instance, Volvo aims to become a climate-neutral company by 2040, a full decade before Ford. Of course, Volvo doesn't sell nearly as many vehicles as Ford does globally. But another automotive giant, Volkswagen, is also ahead of Ford as it aims to sell 22 million EVs by the conclusion of this decade. Ford hasn't been idle, of course, with the fully electric Mustang Mach-E on the way soon and a more efficient hybrid version of the new F-150 offered for the first time.

It's easy for Musk to taunt Ford, though, as Tesla is a young EV automaker while Ford has had to go about transitioning to electrification with a lineup that, at least in the US, is extremely heavy on gas-guzzling trucks. And considering that EVs emit up to 7 times fewer emissions overall than the average new car - taking into account more than just tailpipe emissions - Musk must know that Ford has a long road ahead to catch up. Many commenters seemed to enjoy Musk's dig at Ford, with comments ranging from "burn #TeamTesla" to "Sorry Ford, too little, too late." With the Cybertruck yet to be launched, expect an even more vicious war of words in the near future between these two.