One would not ordinarily expect the top tapas in town to be tendered from the interior of a Citgo gas station. Or any gas station, for that matter. Yet enter the convenience store in the Citgo just off U.S. 1 and SW Seventeenth Avenue, mosey on by the motor oil and potato chips and stuff, and you will surely come across this quaintest of tiny tapas bars, designed like a faux courtyard. And just as thoroughly unexpected as the location is exactly how high Argentine-born, Italian-trained chef Luis Javier Cano raises the tapas bar with finger-licking finger foods such as garlicky gambas a la plancha (griddled shrimp); corvina ceviche; grilled sardines; and a must-order, show-stopping rendition of picadillo pepper puffed with bacalao. Tons of choices, all blessedly cheap ($5 to $18). There are also approximately 1500 bottles of wine on the shelves, many from Spain, any gladly opened and poured by an amiable waiter for a $10 corkage fee. The price on Halvoline Motor Oil isn't bad, either.