Tesla’s customer referral program, in which Tesla owners can give their friends a referral code to get six months of free charging via Tesla’s Supercharger network, will be ending on February 1st, Elon Musk said in a tweet on Thursday. Tesla’s customer referral program will come to an end on Feb. 1, chief executive Elon Musk said in a tweet Thursday.

Source https://www.theverge.com/2019/1/17/18186753/tesla-end-customer-referral-program-elon-musk