To prepare ahead of time for unexpected car breakdowns, keep your car well-maintained with regular checkups and essential tools in the trunk, such as a spare tire, jack, jumper cables, and flashlight. Subscribe to a reliable roadside assistance service and store their contact number on your phone. Also, familiarize yourself with emergency procedures like how to change a flat tire, so you feel confident in managing the situation if help takes longer to arrive. This preparation minimizes stress and helps you handle breakdowns efficiently.