A lawyer told the Federal Communications Commission that Verizon might have collected more than $240 million from false charges, more than four times the amount it agreed to refund.
Both General Motors and Honda, two automakers considered leaders in the technology, said they could reduce costs and development time by working on a common design.
Mr. Martin was an influential figure in information technology who used his fortune to study the problems and opportunities confronting the 21st-century world.