(Bloomberg) -- Artificial intelligence startup Zapata Computing Holdings Inc. plunged 58% in its debut after a merger with former IndyCar driver Michael Andretti’s blank-check firm brought the company public, despite the vast majority of public investors bailing on the deal.Most Read from BloombergTrump’s Net Worth Drops $1 Billion as Social Media Firm SinksErdogan Suffers Historic Loss in Turkey Municipal ElectionsTesla Has Wall Street Worried About How Many Cars It Just SoldCaribbean Golden Pa