Investors are excited about the IPO stock -- but are they too excited?Cava Group (CAVA -1.10%) stock has electrified investors as one of the most exciting initial public offerings (IPOs) in a recent dry spell. Its healthy Mediterranean menu is attracting customers while its stock attracts investing dollars.Cava stock is already up 96% this year. Is there still time to buy into this growth story?Why Cava stock is surgingCava could be the next Chipotle Mexican Grill, and considering Chipotle's massive stock r ...