Vantrue N4 (per Vortex Radar)
Three-channel dashcam (front, interior, rear). Vortex Radar long-time recommendation for rideshare and used-car owners.
Vortex Radar has tested the N4 across multiple firmware revisions and it consistently delivers on the three-camera-in-one promise without the reliability issues that plague cheaper three-channel cameras. We defer to his current pick and link to his review for the deep-dive.
Vortex Radar has notes on parking mode behavior and SD card requirements. Read his review before buying.