AUTOS

GM Sale of National Car Rental Falls Through: The auto maker said it has ended talks to sell its National Car Rental System Inc. unit to a group led by Vestar Equity Partners and is assessing various alternatives. General Motors Corp. spokeswoman Toni Simonetti said one option being considered is simply keeping National, which earned a profit last year. Simonetti declined to comment on whether there have been discussions with other potential buyers. The Wall Street Journal reported that the talks collapsed over price and that GM has already renewed talks with at least one other bidder.