Paul TrapaniYou gotta love Michael Mina: Nobody in this town does high concept with such downright drama. How about a mashup of old French trains, New American cooking, and global wines? SF Weekly food critic Meredith Brody rides the vin express at RN74 (301 Mission at Beale) this week, holding on through a rickety series of dishes from French Laundry alum Jason Berthold that, thankfully perhaps, had absolutely zilch do with the French rail service. Throw in an unhelpful sommelier, and it turns