Elon Musk makes it more expensive to own a Tesla

Last week Tesla CEO Elon Musk abruptly ended sales of the lowest-priced Tesla Model S and X cars. Now, this week he's slashing more with the end of Tesla's customer referral program.

The eccentric billionaire tweeted Wednesday night that as of Feb. 1, the program that gave referred Tesla buyers free six months of Supercharging (and three more months if they didn't take a test drive) would be ending.

The Tesla customer referral program will end on Feb 1. If you want to refer a friend...