I use the eraser wheel on a slow drill and very lightly work it against the pin stripe (vinyl type) keeping the eraser wheel moving across the paint at all times. You think it's easy to burn paint with a rotary? Wait until you allow an eraser wheel to spin in one area for any length of time. IME there is always a shadow or impression left behind where the stripe used to be that will normally fade out over time but not always. For painted on pin stripes I've had good luck removing them with lacquer thinner on a cotton terry towel wrapped around a finger tip and lots of elbow grease, some had to be wet sanded in conjunction with using the lacquer thinner. Sand, wipe with thinner, sand, wipe remaining stripe with thinner, allow a day for things to dry (thinner may make the surrounding paint soft) then polish sanding marks out.