Sorry to owners of older Teslas — your car won't be fully autonomous

Elon Musk said Tesla's older cars don't have fully autonomous driving capabilities. Newsday LLC/Getty Images Elon Musk made several promises over the years that the Teslas people buy will be fully autonomous. Turns out there's now a cut-off for how old the Teslas can be for it to have full autonomy. The CEO said Teslas with the previous-gen HW3 computer won't be fully autonomous. Tesla owners may want to double-check the hardware inside their cars — a lot of them might not have fully autono...