March 13 : SpaceX and the banks underwriting its blockbuster IPO have chosen two law firms to provide legal advice on the deal, one of the first concrete steps companies take when preparing a public listing, two people familiar with the plans said.  Elon Musk's rocket-and-satellite company has hired Gibson Dunn to represent it throughout the process, according to one of the people, while the banks underwriting the deal have chosen Davis Polk & Wardwell, both people said. They asked not to be