For those without cars looking to get to Trader Joe's, don't over think it. Just take car service. Meet at Ascan/Austin every Saturday at 8:45am or whatever and get two or three of you to defray cost. Get Four Ones to pick you up an hour later. Start a forum on Queens Central to coordinate. It's only $6 each way anyway according to Four Ones.
No parking problems down there, no looking for a space back home. Hell, I'd be into it and I have a car.