A lawyer for Elon Musk said in a Philadelphia courtroom that the winners of his $1 million daily prize giveaway in election swing states are not chosen at random, contradicting what Musk said when he announced the contest last month.

Legal experts told NBC News that the disclosure could have legal fallout for Musk. "This is absolutely, unambiguously illegal," Christopher Peterson, a University of Utah law professor who specializes in consumer protection, said in an email.