https://www.reuters.com/article/us-vroom-ipo/online-used-car-seller-vroom-shares-surge-83-in-debut-idUSKBN23G2E4 >Shares of online used car seller Vroom Inc jumped nearly 83% in their market debut on Tuesday, as the U.S. IPO market roars back to life after the coronavirus crisis slammed the brakes on new listings.