Popcorn Cart business. This concessions idea will keep hungry customers coming back for more. Business Overview Here is a great part- or full-time business enterprise that can be started on a small initial investment and return excellent profits. Starting a popcorn cart vending business requires little more than a vendor's license, popcorn cart and a high-traffic location. Excellent locations include weekend flea markets, sports events, fairs, farmers markets and all other busy...