What happens when you bring together an entrepreneur, a product designer and an investment banker who all really love collector vehicles? You get Rally Rd., an app for buying and selling equity shares in classic cars. Launched in 2016, the company’s SEC-compliant platform lets users purchase shares in Ferraris, Porsches, Lamborghinis and other classic models for as little as $50 per share. The company says it has50,000 members that have invested millions.