Johnsberg- You are correct. I should have notified the police after the first time the white Camry came by casing us out, and especially after the second time. I can't change how I reacted at the time, though. At this point, I just have to stay alert, continue sleeping lightly, and continue ramping up the early warning measures and force multipliers around the property and home.
Jrizzle- You make a good point. I hope that if a situation presents itself, they choose to run.