An Arkansas hospital has a solution to keep seniors from having to stand in long lines for flu shots: let them sit in cars. Magnolia Hospital gave more than 370 shots to Medicare patients in just 90 minutes. Patients looking for the scarce shots simply rolled down their windows and rolled up their sleeves. The idea did come with a side effect. The line for the flu shot drive-through stretched down the street and triggered a massive traffic jam in the area.