A couple of years ago, I found a dashcam for only $20 at (IIRC) a Big Lots store. It uses a "lighter socket" type plug, has a USB cable for computer hook-up, a 32 GB card slot, and it automatically "loops" over older files. It is called an "XVibe" and it replaces an older one that didn't loop over files. I had to take the card out every other day and wipe it on my computer.