Electric inline sander?

yeah, Id use it for this truck and that's all. Just a few filler spots but it has long flat panels so I though an inline sander would make quick work of it. Ill manage with my DA and palm sanders and blocks of wood with 80 grit to knock the Bondo down.
I bought a brand new DA, used it once and went back to the Durablocks. I have a tendency to "oversand" and really have to think about it while I am working. When the filler starts changing colour (getting close to metal) it's time to stop.